The U.S.. Marine Corps male officer's blue dress A uniform with sword. Exact Date Shot Unknown PICRYL Public Domain Media Search Engine Public Domain Search Rare WWI US Marine Corps Early Dress Blue Decorated Wool Uniform #252559030 WW1 USMC Officer's uniform : r USMC WW1 USMC Dress Blues Complete Set eBay 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 WWI Marine uniform with the 11th Marine Regiment, 5TH Marine Brigade patch.