In 1939 the Spanish Civil War ended and the captured soldiers of the International Brigades were placed in Internment Camps. Together with his compatriots Dezső Révai was placed in Gurs and Vernet camp in southern France. With some of his fellow inmates he organized a secret photo laboratory where they prepared photographs, montages, booklets and other documents. With a handmade camera he managed to capture the everyday life in the camp. These extraordinary images were smuggled out of the camp and remain preserved in his archive of work to this day. Following two years of imprisonment he volunteered for work through the internment camp administration and was relocated to Germany. He soon escaped back to France and joined the Resistance between 1942-44.