USMC MALE OFFICER BLUE DRESS BLUE WHITE DRESS UNIFORM ("A" AND "B") Revisiting Corps Values: History of the Distinctive Dress Blue Uniform More than a uniform. Marine Corps dress blues are a symbol of honor, courage and commitment. 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