Rocquencourt

Rocquencourt (French: [ʁɔkɑ̃kuʁ] (listen)) is a former commune in the Yvelines department in the Île-de-France in north-central France. On 1 January 2019, it was merged into the new commune Le Chesnay-Rocquencourt.[2] It is about 4 kilometres (2.5 mi) north-west of Versailles and 19 kilometres (12 mi) west of center Paris.

For the commune in the Oise département, see Rocquencourt, Oise.
Rocquencourt
Part of Le Chesnay-Rocquencourt
Town hall
Coat of arms
Location of Rocquencourt
Rocquencourt
Rocquencourt
Coordinates: 48°50′13″N 2°06′42″E
CountryFrance
RegionÎle-de-France
DepartmentYvelines
ArrondissementVersailles
CantonLe Chesnay
CommuneLe Chesnay-Rocquencourt
Area
1
2.78 km2 (1.07 sq mi)
Population
 (2017)[1]
3,474
 • Density1,200/km2 (3,200/sq mi)
Time zoneUTC+01:00 (CET)
 • Summer (DST)UTC+02:00 (CEST)
Postal code
78150
Elevation114–179 m (374–587 ft)
(avg. 150 m or 490 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

The commune is mainly known as the location of a research unit of INRIA (in the Domaine de Voluceau, formerly Camp Voluceau, used by SHAPE) 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's Grande Armée fought its last battle in Rocquencourt and Le Chesnay. After the defeat of Waterloo on 18 June 1815, Grouchy's army withdrew to Paris via Namur and Dinant, reaching Paris on 29 June, a few days before the Prussians, who camped at Versailles.

While negotiating the final armistice, Exelmans was ordered to attack the Prussians at Versailles on 1 July 1815. Under attack the Prussians retreated from Versailles and headed east, but were blocked by the French at Vélizy. They failed to re-enter Versailles and headed for Saint-Germain-en-Laye. 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. (From Presentation of Rocquencourt.)

Points of interest
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See also

References
  1. Téléchargement du fichier d'ensemble des populations légales en 2017, INSEE
  2. Arrêté préfectoral 29 November 2018 (in French)


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