A colorized photo of a US Marine in Blue Dress uniform, circa 1917 : r USMC 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 USMC Dress Blue Uniform WWII Impressions, Inc. USMC MALE ENLISTED BLUE DRESS BLUE WHITE DRESS UNIFORM ("A" AND "B")