 Pari gbolohun ti o tẹle: Gẹgẹbi Faranse ọfẹ, Alain de Boissieu kopa ninu ọpọlọpọ awọn iṣẹ ologun lori Bayonne Easter 1942 ati Dieppe Dieppe Raid, August 1942, ni Madagascar ati Djibouti pẹlu FFL. O ja ni Ogun ti Normandy lati 30 Keje 1944, gẹgẹbi oṣiṣẹ ti olokiki 2nd Armored Division  labẹ Gbogbogbo Philippe Leclerc de Hauteclocque, o si farapa ni Oṣu Kẹjọ Ọjọ 12. Ó jà fún : Ìdáǹdè ìlú Paris 25 August 1944. 