Pedzisa mutsara unotevera: Muna February 1939, Pétillon akakumbira kutumirwa kuBelgian Congo uye akagamuchira chinzvimbo se"chef de cabinet" nokuda kwaGavhuna Mukuru, 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. Mushure mokunge
Kusunungurwa kweBelgium muna September 1944, Pétillon akaita basa guru mukudzorera ukama pakati pehurumende yekoloni muAfrica neHurumende yeColonies.