Following the successful Operation Dragoon landings in southern France, the headquarters of the 1st Army Corps was assembled at Aix, France on September 1, 1944, to command troops as a subordinate corps of the French First Army. 1st Army Corps was now under the command of Lieutenant General Émile Béthouart, a veteran of the 1940 campaign in Norway and an officer who had actively assisted the Allied landings in French North Africa in November 1942. For the remainder of the war in Europe, many French divisions would be subordinated to 1st Army Corps, but the divisions that spent the most time with the corps were the 2nd Moroccan Infantry Division (2e DIM), the 9th Colonial Infantry Division (9e DIC), the 4th Moroccan Mountain Division (4e DMM), and the 1st Armoured Division (1re DB).