Original U.S. Pre WWII Marine Corps Dress Blue Uniform Set Dated 1935 Evening Dress USMC Uniform Guide 2 young women surprised with scholarships from Marine Corps File:Plate VI, Mess Dress and White Dress Uniforms U.S. Marine Corps Uniforms 1983 (1984), by Donna J. Neary.jpg Wikimedia Commons Marine This uniform is worn for formal occasions and has largely maintained its current form since the late 19th century. It remains a strong symbol of battles won. Facebook Dress blues are the formal uniform worn by U.S. Marines for ceremonial occasions, official functions, and formal events, featuring distinctive dark blue coats, light blue trousers, white belts, and medals or ribbons