Members of Troop 1, under the command of Lieutenant (Navy) Kieffer, took part in the raid on Dieppe (Operation Jubilee) with the British and Canadian commandos on 19 August 1942. In November 1942, the unit became officially known as the 1ère compagnie de fusiliers marins commandos, with members of the unit participating in the night raid on the bridge at Plouézec on 11 and 12 November 1942.