Nyorai kupfuurira kweiyi ndima - Muna February 1939, Pétillon akakumbira kutumirwa kuBelgian Congo uye akagamuchira nzvimbo se "chef de cabinet" yeGavhuna-General, Pierre Ryckmans. Akanga achiri muCongo muna May 1940 apo Belgium yakapindirwa neGermany. Pasinei nokuva "mutungamiri wehurumende" yaDe Vleeschauwer nehurumende yeBelgium iri muutapwa muLondon, Pétillon akapedza nguva yakawanda yeHondo Yenyika II muCongo. Pashure Pokusunungurwa kweBelgium
muna September 1944, Pétillon akaita basa guru mukudzorera ukama pakati pehurumende yekoloni muAfrica uye Ministry of the Colonies.