Marine Corps to expand testing of new female dress blue coat > United States Marine Corps Flagship > News Display 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 Marines adopt new uniform rules for cammies, dress blues USMC MALE OFFICER BLUE DRESS BLUE WHITE DRESS UNIFORM ("A" AND "B") Marines adopt new uniform rules for cammies, dress blues USMC MALE ENLISTED BLUE DRESS BLUE WHITE DRESS UNIFORM ("A" AND "B")