USMC Marine Corps Dress Blues Uniform Grouping (WW2 through Vietnam) US Marine Corps Blue Dress Uniform With M16 Rifle Presentation Graphics PowerPoint PPT Presentation Example Slide Templates Blue Dress "D" USMC Uniform Guide Dress Blues Explained The Dress Blue uniform, worn by Marines, is steeped in history, with roots dating back to 1798 when the secretary of war authorized the wearing of a blue uniform 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 13054 U.S. Marine in Dress Blues, Post WWII