U.S. Marine Corps Tropical Service Alpha Green Shade 2241 Poly Wool Man's Dress Jacket 38r Marine Corps USMC Green Service Alpha Dress Uniform Jacket Size 37 S 10 April 1833 Green Uniform #OTD in 1833, President Andrew Jackson orders that green and buff replace blue and scarlet as the colors of the Marine Corps uniform. US Marines Men's Alpha Service Coat: USMC Dress Uniform Jacket This is why some Marines wear the 'French Fourragere,' and some don't