Educated at the Faculté des Mines in his hometown, Poulet served in the First World War and before taking odd jobs in Belgium and France.
[2] He became a part of the 'Groupe du Lundi' that built up around Franz Hellens which attacked the regional novels prevalent in France at the time and instead endorsed magic realism.
[5] A strong supporter of Belgian independence, he was heavily influenced by Charles Maurras and the Action Française and by 1941 was in agreement with Raymond de Becker that a corporatist, authoritarian party of state should be created.
[9] Following his move to France he published a number of autobiographical novels in which he sought to justify his war-time collaboration as merely trying to safeguard the monarchy and Belgian independence.
He would also act as a reader at Éditions Denoël and Plon, as well as writing for the far right journal Rivarol, the Catholic paper Présent and Ecrits de Paris, amongst other publications.