The I Army Corps / I AK (german: I. Armee-Korps) was a

corps Corps (; plural ''corps'' ; from French , from the Latin "body") is a term used for several different kinds of organization. A military innovation by Napoleon I, the formation was first named as such in 1805. The size of a corps varies great ...

level command of the

Prussia Prussia, , Old Prussian: ''Prūsa'' or ''Prūsija'' was a German state on the southeast coast of the Baltic Sea. It formed the German Empire under Prussian rule when it united the German states in 1871. It was ''de facto'' dissolved by an e ...

n and then the Imperial German Armies from the 19th Century to

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...

. It was established with headquarters in

Königsberg Königsberg (, ) was the historic Prussian city that is now Kaliningrad, Russia. Königsberg was founded in 1255 on the site of the ancient Old Prussian settlement ''Twangste'' by the Teutonic Knights during the Northern Crusades, and was ...

(now

Kaliningrad Kaliningrad ( ; rus, Калининград, p=kəlʲɪnʲɪnˈɡrat, links=y), until 1946 known as Königsberg (; rus, Кёнигсберг, Kyonigsberg, ˈkʲɵnʲɪɡzbɛrk; rus, Короле́вец, Korolevets), is the largest city and ...

, Russia). Initially, the Corps catchment area comprised the entire Province of East Prussia, but from 1 October 1912 the southern part of the Province was transferred to the newly formed XX Corps District.German Administrative History
Accessed: 5 June 2012 In peacetime, the Corps was assigned to the I Army Inspectorate, which became the 8th Army at the start of the

First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...

. The corps was still in existence at the end of the war, and was disbanded with the demobilisation of the German Army after

Austro-Prussian War

The I Corps fought in the

Austro-Prussian War The Austro-Prussian War, also by many variant names such as Seven Weeks' War, German Civil War, Brothers War or Fraternal War, known in Germany as ("German War"), (; "German war of brothers") and by a variety of other names, was fought in 186 ...

against

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

in 1866, including the Battle of Trautenau and the

Battle of Königgrätz The Battle of Königgrätz (or Sadowa) was the decisive battle of the Austro-Prussian War in which the Kingdom of Prussia defeated the Austrian Empire. It took place on 3 July 1866, near the Bohemian city of Hradec Králové (German: Königg ...

Franco-Prussian War

The Corps served in the Franco-Prussian War against France in 1870–1871. It saw action in the

Battle of Noiseville The Battle of Noisseville on 31 August 1870 was fought during the Franco-Prussian War and ended in a Prussian victory. Traveling from Metz, the French forces under Marshal François Achille Bazaine attempted to break through the investing line o ...

, the Battle of Gravelotte, the Siege of Metz, the Battle of Amiens, the Battle of Hallue, and the Battle of St. Quentin, among other actions.Cron et al., ''Ruhmeshalle''

Peacetime organisation

From formation in 1820, the Corps commanded two divisions: 1st Division and 2nd Division. These were joined by 37th Division when it was formed on 1 April 1899. 37th Division was transferred to XX Corps when it was formed on 1 October 1912. The 25 peacetime

Corps Corps (; plural ''corps'' ; from French , from the Latin "body") is a term used for several different kinds of organization. A military innovation by Napoleon I, the formation was first named as such in 1805. The size of a corps varies great ...

of the German Army (Guards, I - XXI, I - III Bavarian) had a reasonably standardised organisation. Each consisted of two divisions with usually two infantry brigades, one field artillery brigade and a cavalry brigade each. Each brigade normally consisted of two regiments of the appropriate type, so each Corps normally commanded 8 infantry, 4 field artillery and 4 cavalry regiments. There were exceptions to this rule: : V, VI, VII, IX and

XIV Corps 14 Corps, 14th Corps, Fourteenth Corps, or XIV Corps may refer to: * XIV Corps (Grande Armée), a unit of the Imperial French Army during the Napoleonic Wars * XIV Corps (German Empire), a unit of the Imperial German Army prior to and during World ...

each had a 5th infantry brigade (so 10 infantry regiments) : II,

XIII XIII may refer to: * 13 (number) or XIII in Roman numerals * 13th century in Roman numerals * XIII (comics), ''XIII'' (comics), a Belgian comic book series by Jean Van Hamme and William Vance ** XIII (2003 video game), ''XIII'' (2003 video game), a ...

, XVIII and XXI Corps had a 9th infantry regiment :I, VI and XVI Corps had a 3rd cavalry brigade (so 6 cavalry regiments) :the Guards Corps had 11 infantry regiments (in 5 brigades) and 8 cavalry regiments (in 4 brigades). Each Corps also directly controlled a number of other units. This could include one or more :Foot Artillery Regiment : Jäger Battalion :

Pioneer Pioneer commonly refers to a settler who migrates to previously uninhabited or sparsely inhabited land. In the United States pioneer commonly refers to an American pioneer, a person in American history who migrated west to join in settling and de ...

Battalion :

Train In rail transport, a train (from Old French , from Latin , "to pull, to draw") is a series of connected vehicles that run along a railway track and transport people or freight. Trains are typically pulled or pushed by locomotives (often ...

Battalion

World War I

Organisation on mobilisation

On mobilization on 2 August 1914, the Corps was restructured. The 1st and 2nd Cavalry Brigades were withdrawn to form part of the 1st Cavalry Division and the 43rd Cavalry Brigade was broken up and its regiments assigned to the divisions as reconnaissance units. The Divisions received engineer companies and other support units from the Corps headquarters. In summary, I Corps mobilised with 24 infantry battalions, 8 machine gun companies (48 machine guns), 8 cavalry squadrons, 24 field artillery batteries (144 guns), 4 heavy artillery batteries (16 guns), 3 pioneer companies and an aviation detachment.

Combat chronicle

On mobilisation, I Corps was assigned to the 8th Army to defend East Prussia, while the rest of the Army executed the

Schlieffen Plan The Schlieffen Plan (german: Schlieffen-Plan, ) is a name given after the First World War to German war plans, due to the influence of Field Marshal Alfred von Schlieffen and his thinking on an invasion of France and Belgium, which began on ...

offensive in August 1914. It saw action at the battles of Stallupönen,

Gumbinnen Gusev (russian: Гу́сев; german: Gumbinnen; lt, Gumbinė; pl, Gąbin) is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border ...

, and Tannenberg, and the

First Battle of the Masurian Lakes The First Battle of the Masurian Lakes was a German offensive in the Eastern Front 2–16 September 1914, during the second month of World War I. It took place only days after the Battle of Tannenberg where the German Eighth Army encircled a ...

. The Corps was still in existence at the end of the war.

Commanders

The I Corps had the following commanders during its existence:The Prussian Machine
Accessed: 5 June 2012

References

Bibliography

* * * * * * {{DEFAULTSORT:1 Corps (German Empire) Corps of Germany in World War I