1st Infantry Regiment (France)

1st Infantry Regiment
French: 1er régiment d'infanterie
Insignia of the 1st Infantry Regiment.
Active1479–present
CountryFrance
BranchArmy
TypeMechanised infantry
Size1 regiment (1,150)
Part ofFranco-German Brigade part of 1st Division
Garrison/HQSarrebourg, France
Motto(s)On ne relève pas Picardie
Engagements
French Revolutionary Wars
Battle of Quiévrain
Battle of Valmy
Battle of Jemappes
Siege of Valenciennes
Battle of Wissembourg
Battle of Fleurus
Battle of Stockach
First Battle of Zurich
Second Battle of Zurich
Battle of Moeskirch
Battle of Biberach
Battle of Caldiero
Battle of Sacile
Napoleonic Wars
Peninsular War
Siege of San Sebastián
War of the Fifth Coalition
War of the Sixth Coalition
Wars of German Liberation
Battle of Lützen (1813)
Battle of Leipzig
Countryside of France
Six Days' Campaign
Hundred Days
Waterloo Campaign
Battle of Waterloo
French Conquest of Algeria
Franco-Prussian War
First World War
First Battle of the Marne
Race to the Sea
Battle of the Somme
Battle of Verdun
Third Battle of the Aisne
Battle of Noyon
Second World War
Algerian War
Cold War
War in Afghanistan

The 1st Infantry Regiment (French: 1er Régiment d'Infanterie) or 1er RI is an infantry regiment of the French Army, founded in 1479 as one of the oldest regiments in active service in the world. It is an offspring of the bande de Picardie under the Ancien Régime, and one of the five oldest regiments in France. It particularly distinguished itself, as the 1ère Demi-Brigade d'Infanterie de Ligne, during the French Revolutionary Wars at the Battles of Fleurus (1794), Messkirch (1800) and Biberach (1800). The regiment has been patroned by the city of Saint-Amand-Montrond since 12 April 2003.

The 1er RI is the only French infantry regiment to feature a squadron specialised in urban warfare, the Groupe Commando d'Investigation (CGI, "Breaching Commando Group"). The CGI is, with the Compagnie de Combat en zone Urbaine of the 2nd Foreign Parachute Regiment, the benchmark for urban combat in the French military.