Fonda enlisted in the United States Navy to fight in World War II, saying, "I don't want to be in a fake war in a studio." Previously, he and Stewart had helped raise funds for the defense of Britain. Fonda served for three years, initially as a Quartermaster 3rd Class on the destroyer USS Satterlee. He was later commissioned as a Lieutenant Junior Grade in Air Combat Intelligence in the Central Pacific and was awarded the Navy Presidential Unit Citation and the Bronze Star.
Lt. Fonda, we thank you for your service. Rest in peace.