Grand Uniform Of The École Polytechnique
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The history of the Grand Uniform of the École Polytechnique reflects numerous changes, modeled on the shifts in political regimes, successive governments, and wars that have shaped France's history since the late 18th century. From the
National Convention The National Convention () was the constituent assembly of the Kingdom of France for one day and the French First Republic for its first three years during the French Revolution, following the two-year National Constituent Assembly and the ...
to the Fifth Republic, the Grand Uniform reflects the evolution of societal organization. Originally, polytechnic students were issued two uniforms: one for daily use, known as "BD" for ''
Battle Dress A combat uniform, also called a field uniform, battledress, or fatigues, is a casual uniform used by military, police, fire, and other public uniformed services for everyday fieldwork and duty, as opposed to dress uniforms for formal function ...
'' in the 20th century, and the other, a ceremonial uniform called "grande tenue," which over time became known as the Grand Uniform. The interior uniform should not be confused with the "petite tenue" or Petit Uniforme, a formal dress similar to the Grand Uniform except for the headgear. Although the interior uniform disappeared in the 20th century, the Grand Uniform has endured. Every student, called an "X,"The modern designation, since the creation of the new curricula at the École Polytechnique, is as follows: "student of the polytechnic engineering cycle." This designation is used by the officia
École websitearchive
but students prefer to refer to themselves as "X."
receives a Grand Uniform—commonly referred to as "GU," pronounced gy in —which is worn for
military ceremonies Military tradition is the practices associated with the military or soldiers such as the styles of military uniform, Foot drill, drill, or the music of a military unit. In Europe In Europe, tradition was a principle of military culture that had e ...
and specific events linked to the
École Polytechnique (, ; also known as Polytechnique or l'X ) is a ''grande école'' located in Palaiseau, France. It specializes in science and engineering and is a founding member of the Polytechnic Institute of Paris. The school was founded in 1794 by mat ...
, such as the . Since its creation in 1794, wearing the uniform has been a tradition that unites all generations of students who have passed through the École Polytechnique. It symbolizes belonging to a community that claims a heritage of over two centuries.


History


First Republic and First Empire

The French Revolution of 1789 led to the abolition of many French institutions and a disruption of social norms, including the uniforms of royal armies. In this context, the École Centrale des Travaux Publics, which would be renamed
École Polytechnique (, ; also known as Polytechnique or l'X ) is a ''grande école'' located in Palaiseau, France. It specializes in science and engineering and is a founding member of the Polytechnic Institute of Paris. The school was founded in 1794 by mat ...
a year later, was established on 21 Ventôse Year II (March 11, 1794) to provide the
nation A nation is a type of social organization where a collective Identity (social science), identity, a national identity, has emerged from a combination of shared features across a given population, such as language, history, ethnicity, culture, t ...
with high-level leaders on a
meritocratic Meritocracy (''merit'', from Latin , and ''-cracy'', from Ancient Greek 'strength, power') is the notion of a political system in which economic goods or political power are vested in individual people based on ability and talent, rather than ...
model and to contribute to the
war effort War effort is a coordinated mobilization of society's resources—both industrial and civilian—towards the support of a military force, particular during a state of war. Depending on the militarization of the culture, the relative si ...
through knowledge and technical skills during the
French Revolutionary Wars The French Revolutionary Wars () were a series of sweeping military conflicts resulting from the French Revolution that lasted from 1792 until 1802. They pitted French First Republic, France against Kingdom of Great Britain, Great Britain, Habsb ...
. On 6 Frimaire Year III (November 26, 1794), a few months after the school's creation by the
National Convention The National Convention () was the constituent assembly of the Kingdom of France for one day and the French First Republic for its first three years during the French Revolution, following the two-year National Constituent Assembly and the ...
, , the school's first director-general, proposed issuing uniforms to students despite their civilian status. The objective was to distinguish polytechnicians from other citizens while instilling respect for the uniform. On 8 Pluviôse Year IV (January 28, 1796), the uniform of a cannoneer of the
National Guard National guard is the name used by a wide variety of current and historical uniformed organizations in different countries. The original National Guard was formed during the French Revolution around a cadre of defectors from the French Guards. ...
was assigned to students—a tricolor cockaded hat, gold buttons, and a saber. However, implementing the decree in a turbulent political context proved challenging. The École Centrale des Travaux Publics was renamed École Polytechnique by the law of 15 Fructidor Year III (September 1, 1795), and it was on the 1796 class uniform that the buttons bore the inscription "École Polytechnique" for the first time. The coup d'état of 18 Fructidor, Year V (September 4, 1797), saw three members of the Directory, supported by the army, overthrow the
Council of Five Hundred The Council of Five Hundred () was the lower house of the legislature of the French First Republic under the Constitution of the Year III. It operated from 31 October 1795 to 9 November 1799 during the French Directory, Directory () period of t ...
and the
Council of Ancients The Council of Ancients or Council of Elders () was a house of the French bicameral legislature under the Constitution of the Year III, during the period commonly known as the Directory (French: ''Directoire''), from 22 August 1795 until 9 Nov ...
, which were controlled by a royalist majority. The
legislative body A legislature (, ) is a deliberative assembly with the legal authority to make laws for a political entity such as a country, nation or city on behalf of the people therein. They are often contrasted with the executive and judicial powers o ...
's guard offered no resistance, but the polytechnicians showed readiness to intervene in defense of the legislative power if the conflict turned violent. The incident at the
Théâtre des Jeunes-Artistes The Théâtre des Jeunes-Artistes was an 18th-century Parisian entertainment venue, now defunct, inaugurated in 1790 at 52 rue de Bondy (modern rue René-Boulanger) in the 10th arrondissement of Paris. It had a capacity of 520 spectators.Wild 1 ...
, where students instigated violent altercations, convinced the ruling authorities to find a way to temper the students' behavior. In 1798, a formal decision ordered them to obtain a uniform without delay, as it was believed that, once identifiable, they would exhibit more restrained behavior. The new uniform consisted of a shawl-collared coat closed by five gold buttons, cut in the French style, with a jacket and trousers in national blue, and a three-cornered hat. More civilian than military in appearance, it was said to have been inspired by the designs of
David David (; , "beloved one") was a king of ancient Israel and Judah and the third king of the United Monarchy, according to the Hebrew Bible and Old Testament. The Tel Dan stele, an Aramaic-inscribed stone erected by a king of Aram-Dam ...
. The
tricorne The tricorne or tricorn is a style of hat in a triangular shape, which became popular in Europe during the 18th century, falling out of style by the early 1800s. The word "tricorne" was not widely used until the mid-19th century. During the 18th ...
had the drawback of hindering the handling of the
rifle A rifle is a long gun, long-barreled firearm designed for accurate shooting and higher stopping power, with a gun barrel, barrel that has a helical or spiralling pattern of grooves (rifling) cut into the bore wall. In keeping with their focus o ...
: the front horn made it difficult to hold the weapon vertically and obstructed the wearer's field of vision. This third horn gradually disappeared, leading to adopt the
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
worn en bataille,The term "battle" indicates the martial purpose of this headgear. a
headgear Headgear, headwear, or headdress is any element of clothing which is worn on one's Human head, head, including hats, helmets, turbans and many other types. Headgear is worn for many purposes, including protective clothing, protection against t ...
generalized across all regiments between 1786 and 1791. While the
tricorne The tricorne or tricorn is a style of hat in a triangular shape, which became popular in Europe during the 18th century, falling out of style by the early 1800s. The word "tricorne" was not widely used until the mid-19th century. During the 18th ...
was associated with the
Ancien Régime ''Ancien'' may refer to * the French word for " ancient, old" ** Société des anciens textes français * the French for "former, senior" ** Virelai ancien ** Ancien Régime ** Ancien Régime in France {{disambig ...
, the bicorne, on the contrary, became a symbol of republican identity. A uniform for both full dress and undress, in the
infantry Infantry, or infantryman are a type of soldier who specialize in ground combat, typically fighting dismounted. Historically the term was used to describe foot soldiers, i.e. those who march and fight on foot. In modern usage, the term broadl ...
style,"The grand uniform for Sundays and holidays consisted of a French-style national blue coat with a high collar in scarlet cloth and white lapels, black cuffs and facings, blue shoulder straps, gold buttons, and scarlet cloth turnbacks in the shape of triangles. Additionally, a very fine white cloth vest, breeches of the same color, and white canvas gaiters with forty-six buttons. ..The small uniform included a blue cloth frock coat with black facings, a vest of the same material, a double-breasted blue cloth overcoat, a bonnet de police with scarlet piping and yellow tassel, a cartridge box, and a knapsack." — ''Argot de l'X'' (1894). was assigned to the students when
Napoleon I Napoleon Bonaparte (born Napoleone di Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French general and statesman who rose to prominence during the French Revolution and led Military career ...
granted the École its by the decree of 27 Messidor, Year XII (July 16, 1804). This decision had a dual objective: on the one hand, to bring disorderly students under control, particularly through barracks discipline, as their behavior could pose a threat to political authority; and on the other hand, to anticipate the needs of the
Napoleonic army Napoleon Bonaparte (born Napoleone di Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French general and statesman who rose to prominence during the French Revolution and led Military career ...
. Under the First Empire, the
shako A shako (, , or ) is a tall, cylindrical military cap, usually with a visor, and sometimes tapered at the top. It is usually adorned with an ornamental plate or Cap badge, badge on the front, metallic or otherwise; and often has a feather, hackle ...
replaced the
tricorne The tricorne or tricorn is a style of hat in a triangular shape, which became popular in Europe during the 18th century, falling out of style by the early 1800s. The word "tricorne" was not widely used until the mid-19th century. During the 18th ...
and
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
throughout the Napoleonic infantry: this hardened headgear provided better protection for soldiers. Around 1809, according to (by decision of April 27, 1810, according to the archives), this visor-capped
headgear Headgear, headwear, or headdress is any element of clothing which is worn on one's Human head, head, including hats, helmets, turbans and many other types. Headgear is worn for many purposes, including protective clothing, protection against t ...
was thus given to the students of the École, who also retained the
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
due to their vocation to serve in the scientific branches—
engineering Engineering is the practice of using natural science, mathematics, and the engineering design process to Problem solving#Engineering, solve problems within technology, increase efficiency and productivity, and improve Systems engineering, s ...
,
artillery Artillery consists of ranged weapons that launch Ammunition, munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and l ...
—which were not expected to be in direct contact with the enemy.Until 1971, students of the wore the "Pinder" uniform, which had retained the bicorne for the same reason. Serving in the scientific branches did not prevent the polytechnicians from distinguishing themselves in 1814 during the defense of Paris against the European allied forces opposing
Napoleon I Napoleon Bonaparte (born Napoleone di Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French general and statesman who rose to prominence during the French Revolution and led Military career ...
. Chateaubriand mentions this feat of arms in his ''
Mémoires d'outre-tombe ''Mémoires d'Outre-Tombe'' () is the memoir of François-René de Chateaubriand (1768–1848), collected and published posthumously in two volumes in 1849 and 1850, respectively. Chateaubriand, a writer, politician, diplomat and historian, rema ...
'': File:Assiette GU X 1796.jpg, Grand Uniform of 1796. File:Assiette GU X 1804.jpg, Grand Uniform of 1804. File:Assiette GU X 1809.jpg, Grand Uniform of 1809.


From the Restoration to the Second Empire

During the Restoration, the École was sanctioned for insubordination, with the principal troublemaker being
Auguste Comte Isidore Auguste Marie François Xavier Comte (; ; 19 January 1798 – 5 September 1857) was a French philosopher, mathematician and writer who formulated the doctrine of positivism. He is often regarded as the first philosopher of science in the ...
. This resulted in a collective dismissal on April 13, 1816. This event foreshadowed the reorganization ordinance of September 4, 1816, under
Louis XVIII Louis XVIII (Louis Stanislas Xavier; 17 November 1755 – 16 September 1824), known as the Desired (), was King of France from 1814 to 1824, except for a brief interruption during the Hundred Days in 1815. Before his reign, he spent 23 y ...
, which abolished the military regime and apparatus of the École. Consequently, the
military uniform A military uniform is a standardised clothing, dress worn by members of the armed forces and Paramilitary, paramilitaries of various nations. Military dress and styles have gone through significant changes over the centuries, from colourful ...
was replaced by civilian attire, including a
top hat A top hat (also called a high hat, or, informally, a topper) is a tall, flat-crowned hat traditionally associated with formal wear in Western dress codes, meaning white tie, morning dress, or frock coat. Traditionally made of black silk or ...
. In 1822, the École Polytechnique was repeatedly disturbed by internal unrest. The students had developed the habit of submitting collective decisions to a vote, which caused disorder in the monarchical context. One student was expelled; out of solidarity, all his classmates declared their intention to leave as well. The conflict was eventually resolved through the erosion of collective solidarity, but following this crisis, the civilian regime was called into question. Thus, following the royal ordinances of September 17 and October 20, 1822, under
Louis XVIII Louis XVIII (Louis Stanislas Xavier; 17 November 1755 – 16 September 1824), known as the Desired (), was King of France from 1814 to 1824, except for a brief interruption during the Hundred Days in 1815. Before his reign, he spent 23 y ...
, General Bordessoulle, then governor of the École, once again provided the students with a
military uniform A military uniform is a standardised clothing, dress worn by members of the armed forces and Paramilitary, paramilitaries of various nations. Military dress and styles have gone through significant changes over the centuries, from colourful ...
:"
Bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
worn vertically—as it is today—black cloth coat, "the coat has a single row of buttons, with red lapels, black velvet cuffs and collar, artillery and engineering buttons, trousers with red stripes." — ''Argot de l'X'' (1894).
polytechnicians wore the
frock Frock has been used since Middle English as the name for an article of clothing, typically coat (clothing), coat-like, for men and women. Terminology In British English and in Commonwealth of Nations, Commonwealth countries the word may be us ...
coat but, above all, resumed wearing the
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
, with the sergeants carrying a
sword A sword is an edged and bladed weapons, edged, bladed weapon intended for manual cutting or thrusting. Its blade, longer than a knife or dagger, is attached to a hilt and can be straight or curved. A thrusting sword tends to have a straighter ...
. On July 25, 1830, the Ordinances of Saint-Cloud issued by
Charles X Charles X may refer to: * Charles X of France (1757–1836) * Charles X Gustav (1622–1660), King of Sweden * Charles, Cardinal de Bourbon (1523–1590), recognized as Charles X of France but renounced the royal title See also * * King Charle ...
suspended the
freedom of the press Freedom of the press or freedom of the media is the fundamental principle that communication and expression through various media, including printed and electronic Media (communication), media, especially publication, published materials, shoul ...
, sparking the revolution in Paris. Following the
Three Glorious Days The French Revolution of 1830, also known as the July Revolution (), Second French Revolution, or ("Three Glorious ays), was a second French Revolution after the first of 1789–99. It led to the overthrow of King Charles X, the French B ...
, all the students were granted the right to carry a sword in recognition of their role in defending liberties alongside the insurgent people on the
barricade Barricade (from the French ''barrique'' - 'barrel') is any object or structure that creates a barrier or obstacle to control, block passage or force the flow of traffic in the desired direction. Adopted as a military term, a barricade denotes ...
s. The presence of a polytechnician in the background of the painting ''
Liberty Leading the People ''Liberty Leading the People'' ( ) is a painting of the Romantic era by the French artist Eugène Delacroix, commemorating the July Revolution of 1830 that toppled King Charles X (''r.'' 1824–1830). A bare-breasted “woman of the people” w ...
'' is a testament to the Nation's recognition of the support provided by the polytechnicians to the insurgents of 1830. Thus, the polytechnicians, who already had used the
saber A sabre or saber ( ) is a type of backsword with a curved blade associated with the light cavalry of the Early Modern warfare, early modern and Napoleonic period, Napoleonic periods. Originally associated with Central European cavalry such a ...
, obtained the sword in 1830, which they called the "tangent." The
Marquis de Lafayette Marie-Joseph Paul Yves Roch Gilbert du Motier de La Fayette, Marquis de La Fayette (; 6 September 1757 – 20 May 1834), known in the United States as Lafayette (), was a French military officer and politician who volunteered to join the Conti ...
expressed the : After 1824 and for a time, some students adopted, without regulatory approval, the Spanish
cape A cape is a clothing accessory or a sleeveless outer garment of any length that hangs loosely and connects either at the neck or shoulders. They usually cover the back, shoulders, and arms. They come in a variety of styles and have been used th ...
known as the ''manteau à la chiroga'', which they wore draped over the shoulder. Wearing the frock coat and the cape was in keeping with the fashion of the time. In particular, this Spanish cape, also called the , originated from the 1823 Spanish expedition led by France, which aimed to restore King
Ferdinand VII Ferdinand VII (; 14 October 1784 – 29 September 1833) was King of Spain during the early 19th century. He reigned briefly in 1808 and then again from 1813 to his death in 1833. Before 1813 he was known as ''el Deseado'' (the Desired), and af ...
to the throne and thereby replace the
constitutional monarchy Constitutional monarchy, also known as limited monarchy, parliamentary monarchy or democratic monarchy, is a form of monarchy in which the monarch exercises their authority in accordance with a constitution and is not alone in making decisions. ...
of the
Liberal Triennium The , () or Three Liberal Years, was a period of three years in Spain between 1820 and 1823 when a liberal government ruled Spain after a military uprising in January 1820 by the lieutenant-colonel Rafael del Riego against the absolutist rule o ...
with an absolute monarchy. The liberals, in opposition to the
royalist A royalist supports a particular monarch as head of state for a particular kingdom, or of a particular dynastic claim. In the abstract, this position is royalism. It is distinct from monarchism, which advocates a monarchical system of gove ...
s, named their cape after General , who was one of the leaders of the Spanish army's insurrection on the Isle of León, and wore the cape in his manner—draped over the shoulder. The cape gradually lost its political connotation: with fashion's influence, both liberals and royalists wore the same cape, though one was made of crimson velvet and the other of black velvet. The redingote
coat A coat is typically an outer garment for the upper body, worn by any gender for warmth or fashion. Coats typically have long sleeves and are open down the front, and closing by means of buttons, zippers, hook-and-loop fasteners (AKA velcro), ...
later became preferred, completing the small uniform in 1840.The history of uniform coats does not end there: The
pelerine A pelerine is a small cape-like garment that covers the shoulders. Historically, the pelerine possibly originated in a type of 15th century armor padding that protected the neck and shoulders by itself, if the padded fabric was reinforced internal ...
and
paletot A paletot is a type of topcoat. The name is French, but etymologically derived from the Middle English word ''paltok'', meaning a kind of jacket. Historically, it was a semi-fitted to fitted coat, double-breasted or single-breasted, the f ...
made their appearance in the Polytechnique uniform at the end of the 19th century; the ''pèlerine'' disappeared around 1940, while the ''paletot'' was only abandoned in 1987. For an illustration of the ''pèlerine'' and ''paletot'' of the Polytechnique, see
The 1822 uniform, particularly popular, was worn at the École under
Louis-Philippe Louis Philippe I (6 October 1773 – 26 August 1850), nicknamed the Citizen King, was King of the French from 1830 to 1848, the penultimate monarch of France, and the last French monarch to bear the title "King". He abdicated from his throne ...
and
Napoleon III Napoleon III (Charles-Louis Napoléon Bonaparte; 20 April 18089 January 1873) was President of France from 1848 to 1852 and then Emperor of the French from 1852 until his deposition in 1870. He was the first president, second emperor, and last ...
without modification—except for the removal of
fleur-de-lis The ''fleur-de-lis'', also spelled ''fleur-de-lys'' (plural ''fleurs-de-lis'' or ''fleurs-de-lys''), is a common heraldic charge in the (stylized) shape of a lily (in French, and mean and respectively). Most notably, the ''fleur-de-lis'' ...
symbols under the
July Monarchy The July Monarchy (), officially the ''Kingdom of France'' (), was a liberalism, liberal constitutional monarchy in France under , starting on 9 August 1830, after the revolutionary victory of the July Revolution of 1830, and ending 26 Februar ...
, which eliminated certain
monarchical A monarchy is a form of government in which a person, the monarch, reigns as head of state for the rest of their life, or until abdication. The extent of the authority of the monarch may vary from restricted and largely symbolic (constitutio ...
symbolsFor example, these arms from the July Monarchy do not feature fleur-de-lis. —and remained unchanged until the fall of the Second Empire at the end of the Franco-Prussian War in 1870. File:Assiette GU X 1816.jpg, Grand Uniform of 1816. File:Assiette GU X 1830.jpg, Grand Uniform of 1830. File:Assiette GU X 1840.jpg, Petit Uniform of 1840.


From the Third to the Fifth Republic

France's defeat in the 1870 war led to a sweeping reform of uniforms throughout the military corps. The École Polytechnique was no exception, and from 1874, the
frock Frock has been used since Middle English as the name for an article of clothing, typically coat (clothing), coat-like, for men and women. Terminology In British English and in Commonwealth of Nations, Commonwealth countries the word may be us ...
coat was replaced by a black tunic with two rows of buttons, similar to that of
engineering Engineering is the practice of using natural science, mathematics, and the engineering design process to Problem solving#Engineering, solve problems within technology, increase efficiency and productivity, and improve Systems engineering, s ...
officers. In 1889, the tunic was replaced by a shorter jacket fastened at the chest with seven large uniform buttons. The rounded collar was replaced with a square-cut collar, to which a white inner collar was attached. The Grand Uniform does not appear to have undergone significant changes under the Third Republic, except for the change of the collar insignia, which reverted from two intertwined
laurel Laurel may refer to: Plants * Lauraceae, the laurel family * Laurel (plant), including a list of trees and plants known as laurel People * Laurel (given name), people with the given name * Laurel (surname), people with the surname * Laurel (mus ...
or
olive The olive, botanical name ''Olea europaea'' ("European olive"), is a species of Subtropics, subtropical evergreen tree in the Family (biology), family Oleaceae. Originating in Anatolia, Asia Minor, it is abundant throughout the Mediterranean ...
branches to a
grenade A grenade is a small explosive weapon typically thrown by hand (also called hand grenade), but can also refer to a Shell (projectile), shell (explosive projectile) shot from the muzzle of a rifle (as a rifle grenade) or a grenade launcher. A mod ...
starting in 1903. Starting in 1905, tensions increased between
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
and
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
over the division of Africa and the control of
Morocco Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to Algeria–Morocc ...
; the Tangier Crisis is a notable example of the rivalry between the two powers. In this context of European
imperialist Imperialism is the maintaining and extending of power over foreign nations, particularly through expansionism, employing both hard power (military and economic power) and soft power ( diplomatic power and cultural imperialism). Imperialism fo ...
rivalry, in 1908, students of military schools were given
officer cadet Officer cadet is a rank held by military personnel during their training to become commissioned officers. In the United Kingdom, the rank is also used by personnel of University Service Units such as the University Officers' Training Corps. Th ...
stripes: white alphas adorned with a red border. This measure was linked to the mass assignment of officers to
troop A troop is a military sub-subunit, originally a small formation of cavalry, subordinate to a squadron. In many armies a troop is the equivalent element to the infantry section or platoon. Exceptions are the US Cavalry and the King's Troo ...
units upon graduating from the École Polytechnique. A gold version of these alphas, associated with the rank of
candidate A candidate, or nominee, is a prospective recipient of an award or honor, or a person seeking or being considered for some kind of position. For example, one can be a candidate for membership in a group (sociology), group or election to an offic ...
, appeared in 1919 when students returned as promoted officers from
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
.One can even find an example of second lieutenant stripes pinned on the Grand Uniform. During the
Nazi occupation German-occupied Europe, or Nazi-occupied Europe, refers to the sovereign countries of Europe which were wholly or partly militarily occupied and civil-occupied, including puppet states, by the (armed forces) and the government of Nazi Germany at ...
, the École lost its military status; as a result, rank insignia were replaced by laurel branches on the uniforms of students who became civilians. Apart from this exception, the uniform was not modified. A letter from the École's commander to the
Minister of War A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
attests that the wearing of alphas was reinstated in 1945 when the École regained its military status. After the class of 1947, polytechnicians no longer had any rank insignia on their uniforms. Until the mid-20th century, the indoor uniform was called ''berry'' referring to the
Berry A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit although many pips or seeds may be present. Common examples of berries in the cul ...
cloth used to make it. After
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, it was replaced by the "
Battle Dress A combat uniform, also called a field uniform, battledress, or fatigues, is a casual uniform used by military, police, fire, and other public uniformed services for everyday fieldwork and duty, as opposed to dress uniforms for formal function ...
" from
British Army The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
uniforms. This indoor uniform, commonly called "B.D.," became unpopular among students in the post-May 1968
anti-militarist Antimilitarism (also spelt anti-militarism) is a doctrine that opposes war, relying heavily on a critical theory of imperialism and was an explicit goal of the First and Second International. Whereas pacifism is the doctrine that disputes (especi ...
and
anti-authoritarian Anti-authoritarianism is opposition to authoritarianism. Anti-authoritarians usually believe in full equality before the law and strong civil liberties. Sometimes the term is used interchangeably with anarchism, an ideology which entails opposing a ...
context. This sentiment was reflected in multiple "uniform strikes" — in 1972, 1975, and 1977 — initiated by students for various reasons.1971: Protest against the "toughening of regulations and sanctions against two classmates"; 1975: Protest against sanctions imposed on four students who distributed leaflets criticizing the reform of military service for polytechnicians; 1977: Protest against sanctions against a student for "untidy attire" and insolence toward the director general of the École. The class of X1985 finally abolished the indoor uniform, making the Grand Uniform the only uniform for polytechnicians. The events of
May 1968 The following events occurred in May 1968: May 1, 1968 (Wednesday) *In Dallas, at its first meeting since its creation through a merger, the United Methodist Church removed its rule that Methodist ministers could not drink alcohol nor sm ...
also led to the temporary or permanent disappearance of many traditions at the École, including the Khômiss and the Code X, a collection of rules and traditions established by the students. In particular, it dictated how to wear the
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
since 1852: The expression "mean and extreme ratio" refers to the ideal proportions of the
golden ratio In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their summation, sum to the larger of the two quantities. Expressed algebraically, for quantities and with , is in a golden ratio to if \fr ...
. The Khômiss was not reestablished until 1987, and students resumed wearing the bicorne in this manner from that date.


Constitution of the Grand Uniform for military cadres

In a pursuit of uniformity, the decision to equip all officers in leadership roles with a Grand Uniform, and consequently the creation of the
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
for cadres,
Bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
slightly higher and equipped with a wider cord: Photograph of the head of the École Polytechnique (2018).
was made in 1979. It was worn for the first time during the July 14th parade in 1980. Until then, Army officers wore the so-called "31" outfit with a kepi and saber, featuring a row of gold buttons and made of black cloth;
Navy A navy, naval force, military maritime fleet, war navy, or maritime force is the military branch, branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral z ...
and
Air Force An air force in the broadest sense is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army aviati ...
officers wore their respective ceremonial uniforms. The Grand Uniform for non-commissioned officers, including the bicorne, dates back to 2003. In 2018, during the departure ceremony for the X2015 class, Director General François Bouchet reintroduced the Grand Uniform for generals,On a model of Tenue 31 for officers of arms, not service officers, the Grand Uniform for generals includes a bicorne with black feathers and a red-and-gold command sash belt. Photograph of General Engineer François Bouchet wearing the Grand Uniform of a General for the first time, March 21, 2018. For comparison: Photograph of General Engineer François Bouchet at the Sainte Barbe ceremony, December 4, 2017. For a detailed description of the 31st officer's uniform, se
Tenue 31, a website about French uniforms from the interwar period, "Généraux et Maréchaux"archive
For a detailed description of the 31 service officer uniform, se
Tenue 31, a website about French uniforms from the interwar period, "Service des Fabrications d'Armement"archive
For photographs of a general's outfit 31 (1930)

ttps://web.archive.org/web/20220103173717/https://www.bertrand-malvaux.com/fr/p/15688/uniforme-du-general-de-brigade-lambrigot-tunique-pantalon-et-bicorne-1910.html archive
modeled after the uniform worn by generals between 1918 and 1940, demonstrating a commitment to preserving traditions at the École Polytechnique.


Women's Grand Uniform

In 1972, the
École Polytechnique (, ; also known as Polytechnique or l'X ) is a ''grande école'' located in Palaiseau, France. It specializes in science and engineering and is a founding member of the Polytechnic Institute of Paris. The school was founded in 1794 by mat ...
entrance exam was opened to women. Consequently, they needed to be provided with a Grand Uniform. The uniform was chosen from several proposals. In his memoirs,
Michel Debré Michel Jean-Pierre Debré (; 15 January 1912 – 2 August 1996) was the first Prime Minister of the French Fifth Republic. He is considered the "father" of the current Constitution of France. He served under President Charles de Gaulle from 1959 ...
claims that the model was selected by his wife. The chosen design was by couturier , who was known for dressing
General de Gaulle Charles André Joseph Marie de Gaulle (22 November 18909 November 1970) was a French general and statesman who led the Free France, Free French Forces against Nazi Germany in World War II and chaired the Provisional Government of the French Re ...
. The first women's Grand Uniform featured a skirt, pumps, and a tricorne. The original
tricorne The tricorne or tricorn is a style of hat in a triangular shape, which became popular in Europe during the 18th century, falling out of style by the early 1800s. The word "tricorne" was not widely used until the mid-19th century. During the 18th ...
was crafted based on a model from the
Royal Navy The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
. From the 1973 class onward, female polytechnicians received a lower tricorne adorned with a
cockade A cockade is a knot of ribbons, or other circular- or oval-shaped symbol of distinctive colours which is usually worn on a hat or cap. The word cockade derives from the French ''cocarde'', from Old French ''coquarde'', feminine of ''coquard'' (va ...
and a ''cul-de-dé'' (a gold braid). The original skirt was cut slightly above the knee. (X1972) recalls: "Our skirt didn't go past the knee, but in the era of
miniskirt A miniskirt (or mini-skirt, mini skirt, or mini) is a skirt with its hemline well above the knees, generally at mid-thigh level, normally no longer than below the buttocks; and a dress with such a hemline is called a minidress or a miniskirt ...
s, it already seemed quite long to us." It was lengthened in 1974 to cover the knee. Legend has it that the wife of (X1938), uncomfortable at the sight of the bare knees of female polytechnicians, convinced her husband. The 1974 technical manual thus specified that "the length of the skirt is determined so that the hem stops at mid-knee."
Fashion Fashion is a term used interchangeably to describe the creation of clothing, footwear, Fashion accessory, accessories, cosmetics, and jewellery of different cultural aesthetics and their mix and match into Clothing, outfits that depict distinct ...
had also changed; as early as 1970, ''
Paris Match ''Paris Match'' () is a French-language weekly gossip magazine. It covers major national and international news along with celebrity lifestyle features. ''Paris Match'' has been considered "one of the world's best outlets for photojournalism". ...
'' headlined "The Miniskirt is Dead." After pumps were replaced by boots, the skirt was lengthened further to cover the exposed part of the leg, and was widened accordingly to allow for marching in step—resulting in an aesthetic outcome that was not universally appreciated. The first female polytechnicians were denied the right to wear the tangente, a term for the sword, which had become a symbol of the École since 1830. Instead, they were given a black handbag, not used during
ceremonies A ceremony (, ) is a unified ritualistic event with a purpose, usually consisting of a number of artistic components, performed on a special occasion. The word may be of Etruscan origin, via the Latin . Religious and civil (secular) ceremoni ...
. Starting in 1977, female polytechnicians were finally permitted to wear the tangente and thus wore the sword belt. The first Grand Uniform for women included
pump A pump is a device that moves fluids (liquids or gases), or sometimes Slurry, slurries, by mechanical action, typically converted from electrical energy into hydraulic or pneumatic energy. Mechanical pumps serve in a wide range of application ...
s. The first ceremony, held on
November 11 Events Pre-1600 * 308 – At Carnuntum, Emperor ''emeritus'' Diocletian confers with Galerius, '' Augustus'' of the East, and Maximianus, the recently returned former ''Augustus'' of the West, in an attempt to end the civil wars of th ...
, 1972, took place in cold weather. The female polytechnicians reportedly requested warmer footwear, and from the X1976 class onward, pumps were replaced by
boot A boot is a type of footwear. Most boots mainly cover the foot and the ankle, while some also cover some part of the lower calf. Some boots extend up the leg, sometimes as far as the knee or even the hip. Most boots have a heel that is clearl ...
s. Another explanation, supported by uniformology and the simultaneous nature of events, suggests that as soon as the sword was granted to female polytechnicians, the pumps had to be replaced by boots. The first boots were form-fitting and featured a 4 cm, wide, flat
heel The heel is the prominence at the posterior end of the foot. It is based on the projection of one bone, the calcaneus or heel bone, behind the articulation of the bones of the lower leg. Structure To distribute the compressive forces exerted ...
. A few years later, around 1986, wider boots with a lower, stacked heel were adopted. Around 2000, slim-fitting
Paraboot Paraboot is a brand of shoes and boots made in France at a factory in Saint-Jean-de-Moirans, Isère. Paraboot began in Izeaux in 1908 and remains a family business, currently in the fourth generation. Esquire magazine called its Michael derby ...
boots with thick soles and zippers were introduced, though they were not universally liked. The red scrunchie quickly appeared to standardize the hairstyles of young women. In 1996, female polytechnicians were granted the right to wear the
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
—an iconic symbol of the École—replacing the
tricorne The tricorne or tricorn is a style of hat in a triangular shape, which became popular in Europe during the 18th century, falling out of style by the early 1800s. The word "tricorne" was not widely used until the mid-19th century. During the 18th ...
. Representing the X1994 class,
Caroline Aigle Commandant Caroline Aigle () (12 September 1974 – 21 August 2007) was a French aviator who achieved a historical first when at the age of 25, she became the first woman fighter pilot in the French Air Force. Her promising military career was cut ...
and Marie Bayrou—the daughter of
François Bayrou François René Jean Lucien Bayrou (; born 25 May 1951) is a French politician who has served as Prime Minister of France since December 2024. He has presided over the European Democratic Party (EDP) since 2004 and the Democratic Movement (France ...
, then Minister of National Education—advocated for this change in the office of the Director General. For aesthetic and uniformity reasons, the skirt was replaced by trousers for the 2020 class of female polytechnicians. This choice was also influenced by fashion trends: in 2017,
Dior Christian Dior SE (), commonly known as Dior, is a French Multinational corporation, multinational luxury goods company that is controlled and chaired by French businessman Bernard Arnault, who also heads LVMH. , Dior controlled around 42% of ...
's Spring-Summer collection reinterpreted the women's Grand Uniform with a mandarin
collar Collar may refer to: Human neckwear *Clerical collar (informally ''dog collar''), a distinctive collar used by the clergy of some Christian religious denominations *Collar (clothing), the part of a garment that fastens around or frames the neck ...
and trousers.


Polytechnician slang and the Grand Uniform

As demonstrated by the term "tangente," polytechnician slang has embraced the Grand Uniform. The following examples, some of which fell out of use in the 20th century, show that the reverse is also true: the Grand Uniform influenced the slang of the X.


Top of the Class: "major de promotion"

The top fifty students in the entrance exam, who served as barracks leaders, were appointed
sergeant Sergeant (Sgt) is a Military rank, rank in use by the armed forces of many countries. It is also a police rank in some police services. The alternative spelling, ''serjeant'', is used in The Rifles and in other units that draw their heritage f ...
s. The top-ranking student was named sergent-major, which is the origin of the expression "major de promotion." They wore insignia on their uniforms: two diagonal stripes for sergeant-majors and one for sergeants.


Foreign students: "constants"

From 1794 until the early 20th century, the few foreign students at the X were considered auditors, not full polytechnicians. As a result, they did not receive the school's uniform and, in particular, were not issued the tangente. This led to a mathematical
pun A pun, also known as a paronomasia in the context of linguistics, is a form of word play that exploits multiple meanings of a term, or of similar-sounding words, for an intended humorous or rhetorical effect. These ambiguities can arise from t ...
referencing the
geometric Geometry (; ) is a branch of mathematics concerned with properties of space such as the distance, shape, size, and relative position of figures. Geometry is, along with arithmetic, one of the oldest branches of mathematics. A mathematician w ...
term "tangent." The term "constant" fell out of use after 1921, when foreign students were admitted to the entrance exam and received the complete uniform.


Courtyard entry, a ''boîte à claque''

The
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
was cumbersome to carry. For a time, a foldable model existed that could flatten, and the
onomatopoeia Onomatopoeia (or rarely echoism) is a type of word, or the process of creating a word, that phonetics, phonetically imitates, resembles, or suggests the sound that it describes. Common onomatopoeias in English include animal noises such as Oin ...
"clac," mimicking the sound the
hat A hat is a Headgear, head covering which is worn for various reasons, including protection against weather conditions, ceremonial reasons such as university graduation, religious reasons, safety, or as a fashion accessory. Hats which incorpor ...
made when folding, earned it the nickname claque. The name stuck even after the foldable model was discontinued.The term "frigate" was also used in the past. The bicorne was stored in a
trapezoid In geometry, a trapezoid () in North American English, or trapezium () in British English, is a quadrilateral that has at least one pair of parallel sides. The parallel sides are called the ''bases'' of the trapezoid. The other two sides are ...
al box resembling the shape of the entrance courtyard of the École at 5 in
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
. As a result, this small courtyard became known as the boîte à claque.


Military service: cuirs and zincs

At the beginning of the 20th century, some students completed their
military service Military service is service by an individual or group in an army or other militia, air forces, and naval forces, whether as a chosen job (volunteer military, volunteer) or as a result of an involuntary draft (conscription). Few nations, such ...
in their first year, while others did so in their second year. In 1903, the École considered issuing bronzed steel scabbards to students, replacing the previously used blackened leather scabbards. Consequently, first-year students received leather scabbards, while those who arrived a year later after serving in the troops received metallic scabbards, nicknamed zincs. By
metonymy Metonymy () is a figure of speech in which a concept is referred to by the name of something associated with that thing or concept. For example, the word " suit" may refer to a person from groups commonly wearing business attire, such as sales ...
, the term cuirs (leathers) referred to students who entered the École directly, while zincs referred to those who arrived a year later after
military service Military service is service by an individual or group in an army or other militia, air forces, and naval forces, whether as a chosen job (volunteer military, volunteer) or as a result of an involuntary draft (conscription). Few nations, such ...
. For the 1906 to 1912 classes, cuirs were distinguished in the school's directory by the mention "c." The designation gradually faded away as the metallic scabbard was distributed to all students.


Red and yellow: origins of class colors

At the
École Polytechnique (, ; also known as Polytechnique or l'X ) is a ''grande école'' located in Palaiseau, France. It specializes in science and engineering and is a founding member of the Polytechnic Institute of Paris. The school was founded in 1794 by mat ...
, even-numbered class years are known as rôujes (reds), while odd-numbered years are jônes (yellows). This tradition stems from the history of the École's uniform. It dates back to 1823, during the Restoration, when the École regained its military status. Students were issued two hats: the
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
and the bonnet de police—the first was worn with the Grand Uniform, and the second with the Petit Uniforme.The regulation follows that of 1804 on this point. The bonnet de police was adorned with a tuft of threads. In the
French Navy The French Navy (, , ), informally (, ), is the Navy, maritime arm of the French Armed Forces and one of the four military service branches of History of France, France. It is among the largest and most powerful List of navies, naval forces i ...
, this tuft evolved into the pompom of the
sailor cap A sailor cap is a round, flat visorless hat worn by sailors in many of the world's navies. A tally, an inscribed black silk ribbon, is tied around the base which usually bears the name of a ship or a navy. Many navies (e.g. Germany) tie the ta ...
, while it became a decorative tassel on the bonnet de police. In their second year,The École Polytechnique used to be a 2-year program, except for repeating a year. Nowadays, the program lasts 3 years, with an additional year of specialization in the 4th year. students transitioned from the red-tasseled bonnet de police to the elegant gold-tasseled cap of
non-commissioned officer A non-commissioned officer (NCO) is an enlisted rank, enlisted leader, petty officer, or in some cases warrant officer, who does not hold a Commission (document), commission. Non-commissioned officers usually earn their position of authority b ...
s,The
bicorne The bicorne or bicorn (two-cornered) is a historical form of hat widely adopted in the 1790s as an item of uniform by European and American army and naval officers. Most generals and staff officers of the Napoleonic period wore bicornes, whic ...
of the École Polytechnique itself is of the
non-commissioned officer A non-commissioned officer (NCO) is an enlisted rank, enlisted leader, petty officer, or in some cases warrant officer, who does not hold a Commission (document), commission. Non-commissioned officers usually earn their position of authority b ...
model: from the beginning, the uniform of the X was designed based on the model of a
non-commissioned officer A non-commissioned officer (NCO) is an enlisted rank, enlisted leader, petty officer, or in some cases warrant officer, who does not hold a Commission (document), commission. Non-commissioned officers usually earn their position of authority b ...
's uniform.
marking their promotion to
sergeant Sergeant (Sgt) is a Military rank, rank in use by the armed forces of many countries. It is also a police rank in some police services. The alternative spelling, ''serjeant'', is used in The Rifles and in other units that draw their heritage f ...
s: "elegant bonnet de police with a golden tassel." In 1843, polytechnicians were equipped with a
kepi The kepi ( ) is a cap with a flat circular top and a peak, or visor. In English, the term is a loanword from , itself a re-spelled version of the , a diminutive form of , meaning . In Europe, the kepi is most commonly associated with French ...
. Though they still received a bonnet, they were no longer permitted to leave the École wearing it. This change had two effects on students who paid for their equipment: * The "gold" tassel was replaced with a less expensive yellow one.The term "jonquil" is also used to refer to yellow in the texts. * It became unnecessary to switch caps after the first year. Thus, the rôuje and jône, originally designations for first and second-year students, began alternating between even and odd-numbered years at an indeterminate date between 1843 and 1858: In 1874, the bonnet de police was permanently replaced by a kepi known as the "small dress" kepi. It was decided that the
grenade A grenade is a small explosive weapon typically thrown by hand (also called hand grenade), but can also refer to a Shell (projectile), shell (explosive projectile) shot from the muzzle of a rifle (as a rifle grenade) or a grenade launcher. A mod ...
emblem would alternate between red and yellow depending on the parity of the graduating class.The minister makes an error when writing the regulation, stating "it is jonquil for first-year students and scarlet for second-year students." The 1887 regulation established that: "On the front of the band is placed a
grenade A grenade is a small explosive weapon typically thrown by hand (also called hand grenade), but can also refer to a Shell (projectile), shell (explosive projectile) shot from the muzzle of a rifle (as a rifle grenade) or a grenade launcher. A mod ...
(height 25 mm), embroidered in jonquil yellow wool for students of one division; in scarlet wool for students of the other division, alternating in this manner." Therefore, the piping on the interior
kepi The kepi ( ) is a cap with a flat circular top and a peak, or visor. In English, the term is a loanword from , itself a re-spelled version of the , a diminutive form of , meaning . In Europe, the kepi is most commonly associated with French ...
also adopted the color associated with the promotion's class year.


See also

*
Traditions of the École Polytechnique The traditions of the École polytechnique, École Polytechnique mostly originated during the militarization of the school by Napoleon, Napoleon I in 1804. They are constantly evolving, except for the loss of some traditions between 1968 and 1985 ...


Notes


References


Bibliography

* * * * * * * * * * * *


External links

* ** Associated publication: * ** Associated publication: * ** Associated publication: * ** Associated publication: * ** Associated publication: * * * * * * {{Cite journal , last=Azzola , first=Olivier , date=2022 , title=Les 200 ans du bicorne , trans-title=200 years of the bicorne , url=https://www.lajauneetlarouge.com/wp-content/uploads/2022/09/La_Jaune_et_la_Rouge_778_6-9.pdf , journal=La Jaune et la Rouge , issue=778 , pages= , doi= , archive-url=https://web.archive.org/web/20230529103901/https://www.lajauneetlarouge.com/wp-content/uploads/2022/09/La_Jaune_et_la_Rouge_778_6-9.pdf , archive-date=May 29, 2023 École Polytechnique French military uniforms Military slang and jargon