World War II
From 1942 to 1945, Thiebaud served in the Army Air Force, assigned to the Special Services Department as an artist and cartoonist. He was transferred to the First Air Force Motion Picture Unit, commanded by future president Ronald Reagan. During the war, he met his first wife Patricia Patterson, with whom he had two daughters. The first, Twinka, was born in 1945 and the second, Mallary Ann, in 1951.