 MGM next planned to star Gravey in a film version of Rafael Sabatini's adventure novel "Scaramouche", but instead he returned to France just before the Nazi occupation began.Although he had agreed to appear in German-approved French films, Gravey was an underminer of the invaders as a member of the French Secret Army and the Foreign Legion.At the end of the war, Gravey was considered a war hero, and continued to be featured in French productions such as "La Ronde" (with Danielle Darrieux), and "Royal Affairs in Versailles" (1954).