US NAVY Uniforms Zia Guimari Blue Dress "C" USMC Uniform Guide According to the 1975 U.S. Navy Uniform Regulations, the rarely seen Service Dress Blue (Yankee) uniform was for "warm weather afternoon and early evening functions such as yachting parties." The uniform was Uniform Guide Enterprise Division Marine Corps to expand testing of new female dress blue coat > United States Marine Corps Flagship > News Display