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 Marine Corps Captain in dress blue uniform, World War II Painting by Hollem, Howard R. . Pixels When others hold back, Marines advance. The Mameluke sword, which now graces the dress uniform of every Marine Officer, symbolizes a legacy established through the crucible of combat. Halfway across the world, These ocean blue watercolor wedding invitations are so stunnning!