Yvelines
Yvelines () is a department in the western part of the ÃŽle-de-France region in Northern France. In 2019, it had a population of 1,448,207.department in the
ÃŽle-de-France
The ÃŽle-de-France (; ; ) is the most populous of the eighteen regions of France, with an official estimated population of 12,271,794 residents on 1 January 2023. Centered on the capital Paris, it is located in the north-central part of the cou ...
in north-central
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 ...
. On 1 January 2019, it was merged into the new commune
Le Chesnay-Rocquencourt
Le Chesnay-Rocquencourt () is a communes of France, commune in the western suburbs of Paris, in the department of Yvelines.
It was established on 1 January 2019 from the amalgamation of the communes of Le Chesnay and Rocquencourt, Yvelines, Roc ...
Versailles
The Palace of Versailles ( ; ) is a former royal residence commissioned by King Louis XIV located in Versailles, Yvelines, Versailles, about west of Paris, in the Yvelines, Yvelines Department of ÃŽle-de-France, ÃŽle-de-France region in Franc ...
and west of center
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 ...
.
The commune is mainly known as the location of a research unit of
INRIA
The National Institute for Research in Digital Science and Technology (Inria) () is a French national research institution focusing on computer science and applied mathematics.
It was created under the name French Institute for Research in Comp ...
(in the Domaine de Voluceau, formerly Camp Voluceau, used by
SHAPE
A shape is a graphics, graphical representation of an object's form or its external boundary, outline, or external Surface (mathematics), surface. It is distinct from other object properties, such as color, Surface texture, texture, or material ...
) as well as a freeway exchange known as the Rocquencourt Triangle (''triangle de Rocquencourt'', junction of the A12 autoroute and the A13 autoroute), which is often mentioned in traffic news.
History
On 1 July 1815,
Napoleon
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 ...
fought its last battle in Rocquencourt and Le Chesnay. After the defeat of Waterloo on 18 June 1815, Grouchy's army withdrew to
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 ...
via
Namur
Namur (; ; ) is a city and municipality in Wallonia, Belgium. It is the capital both of the province of Namur and of Wallonia, hosting the Parliament of Wallonia, the Government of Wallonia and its administration.
Namur stands at the confl ...
and
Dinant
Dinant () is a City status in Belgium, city and Municipalities in Belgium, municipality of Wallonia located in the Namur Province, province of Namur, Belgium. On the shores of river Meuse, in the Ardennes, it lies south-east of Brussels, south ...
, reaching Paris on 29 June, a few days before the
Prussia
Prussia (; ; Old Prussian: ''Prūsija'') was a Germans, German state centred on the North European Plain that originated from the 1525 secularization of the Prussia (region), Prussian part of the State of the Teutonic Order. For centuries, ...
ns, who camped at
Versailles
The Palace of Versailles ( ; ) is a former royal residence commissioned by King Louis XIV located in Versailles, Yvelines, Versailles, about west of Paris, in the Yvelines, Yvelines Department of ÃŽle-de-France, ÃŽle-de-France region in Franc ...
.
While negotiating the final
armistice
An armistice is a formal agreement of warring parties to stop fighting. It is not necessarily the end of a war, as it may constitute only a cessation of hostilities while an attempt is made to negotiate a lasting peace. It is derived from t ...
Saint-Germain-en-Laye
Saint-Germain-en-Laye () is a Communes of France, commune in the Yvelines Departments of France, department in the ÃŽle-de-France in north-central France. It is located in the western suburbs of Paris, from the Kilometre Zero, centre of Paris. ...
. Their first squadron came under fire at the entrance of Rocquencourt and attempted to escape through the fields. They were forced into a small, narrow street in Le Chesnay and killed or captured. However, the main body of the Prussian army succeeded in reaching Saint-Germain. (Fro Presentation of Rocquencourt )
Communes of the Yvelines department
A commune is an alternative term for an intentional community. Commune or comună or comune or other derivations may also refer to:
Administrative-territorial entities
* Commune (administrative division), a municipality or township
** Communes o ...