Marines to Pattern New Female Dress Blues After Male Style SOFREP Blue Dress USMC Uniform Guide Did you know? The Marine Corps' Dress Blues is the only uniform in the U.S. military designated to include the red, white, and blue colors of the American flag. This distinctive uniform Elegant Royal Blue Prom Dress, Saphetti Strap Long Prom Dresses Hoprom Original U.S. Pre WWII Marine Corps Dress Blue Uniform Set Dated 1935 Dress blues are the formal uniform worn by U.S. Marines for ceremonial occasions, official functions, and formal events, featuring distinctive dark blue coats, light blue trousers, white belts, and medals or ribbons