Le Régiment de la Chaudière (Mitrailleuses) mobilized 'Le Régiment de la Chaudière (Mitrailleuses), CASF' for active service on 1 September 1939. It was redesignated: 'Le Régiment de la Chaudière, CASF' on 24 May 1940; and '1st Battalion, Le Régiment de la Chaudière, CASF' on 7 November 1940. It embarked for Great Britain on 21 July 1941. On D- Day, 6 June 1944, it landed in Normandy, France as a part of the 8th Infantry Brigade, 3rd Canadian Infantry Division, and it continued to fight in North West Europe until the end of the war. The overseas battalion was disbanded on 15 January 1946.
The regiment subsequently mobilized the '3rd Battalion, Le Régiment de la Chaudière, CIC, CAOF' on 1 June 1945 for service with the Canadian Army Occupation Force in Germany. The battalion was disbanded on 24 April 1946. Source: Canada.ca