Dress Blue Deltas is the first Marine Corps uniform most applicants ever seethe one worn by the recruiter who shook their hands and changed their lives . Dress Blue Deltas feature the BLUE ANGELS DELTA COIN Dress Blue Deltas is the first Marine Corps uniform most applicants ever seethe one worn by the recruiter who shook their hands and changed their lives . Dress Blue Deltas feature the 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 Officer Blue Dress A (medals) Blue Dress USMC Uniform Guide