Many real-life Marines are extras in the movie.
The ribbons Jack Webb wears on his dress uniform are from top to bottom and left to right are:First Row: Navy Cross;Second Row: Navy Commendation, Bronze Star, Navy Presidential Unit Citation;Third Row: Purple Heart, Good Conduct, China Service;Fourth Row: American Defense Service, American Campaign, Asiatic Pacific Campaign;Fifth Row: Victory Medal World War II, World War II Occupation, National Defense;Sixth Row: Korean Service, United Nations Korean Service, Korean Presidential Unit Citation.