U.S. Army Service Uniform Dress Blue Eastern Costume Why so blue? History of Air Force service uniform > Ramstein Air Base > Article Display USMC MALE ENLISTED BLUE DRESS BLUE WHITE DRESS UNIFORM ("A" AND "B") 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