The Garibaldi Legion (French: Légion Garibaldienne) or officially the 4th Marching Regiment of the 1st Foreign Regiment (French: 4e régiment de marche du 1er étranger, 4eR.M. 1erR.E) was a unit of the French Foreign Legion which formed the Marching Regiment of the Foreign Legion composed entirely of Italian citizens, who fought in France in World War I against the Germans and existing ephemerally from the end of 1914 to 1915. After having distinguished themselves at Argonne (Bois de Balante) in December 1914, the regiment was finally dissolved on March 5, 1915, due to Italy's entry in the war and the departure of the majority of the regiment back to their country of origin.