I see Marines both wear blue and white pants for full dress uniforms. In which case they use which? : r uniformporn November Company graduated Recruit Training today in the new female Blue Dress Coat; the first company at MCRD PI to do so. Read the below graphic to see some differences between the USMC FEMALE ENLISTED BLUE DRESS UNIFORM ("A" AND B") Usmc Dress Blue Tunic 35 Long Dusty Blue halter Flared Top Maxi Dress Dress blues uniform Modest Little Me Boutique