Stationed in France until 1941,[4] de Rochemont produced a series of shorts which covered subjects like World War II, the 1920s, and the Vatican. In 1943,[5] de Rochemont became the president of France Forever[6] and continued his action until after the Liberation, giving way to Doctor Albert Simard.[5] From 1943 to 1951, de Rochemont was executive producer of The March of Timenewsreel series, which was co-created by his brother, Louis de Rochemont.[1]
In 1952, de Rochemont produced various films on Abraham Lincoln.[9] In 1955, he founded his own film production company, Vavin Incorporated.[10][11] The company produced instructional films for organizations like Reader's Digest and the French Tourist Office between the 1950s and 1980s.[3] De Rochemont retired from Vavin in 1980.[1] He was also the author or co-author of three cookbooks.[1]