He received the rank of major, took charge of the Free French military intelligence unit Bureau Central de Renseignements et d'Action (BCRA), and took the codename "Colonel Passy".
Han fik rang af major og overtog ledelsen af de Frie franske styrkers efterretningsenhed Bureau Central de Renseignements et d'Action (BCRA), og antog kodenavnet "Colonel Passy".