The "Fusiliers marins" participated in the campaigns of Free France. They initially formed a battalion then the 1er Régiment de Fusiliers Marins 1e RFM at the corps of the 1st Free French Division (1er DFL) and the 1er Bataillon de Fusiliers Marins Commandos (1er BFMC) who served in 10 (Inter-Allied) Commando. The 177 Commandos Kieffer who disembarked on 6 June in Normandy, were Fusiliers Marins forming part of the Free France Forces. Other Fusiliers Marins, drawn from the former Armée de Vichy, formed the Régiment Blindé de Fusiliers-Marins (RBFM) which served efficiently as part of the 2nd Armored Division. On 30 April 1945 the Fusiliers Marins played a role in the liberation of the Île d'Oléron. Disembarked at 0620 at Gatseau, an FM detachment advanced slowly through forested terrain facing a stern resistance.