This is a list of known United States Engineer Regiments in existence at the time of World War II. * 13th Engineer General Service Regiment * 38th Engineer General Service Regiment * 41st Engineer General Service Regiment * 42nd Engineer General Service Regiment * 43rd Engineer General Service Regiment * 45th Engineer General Service Regiment * 46th Engineer General Service Regiment * 47th Engineer General Service Regiment * 91st Engineer General Service Regiment * 92nd Engineer General Service Regiment * 93rd Engineer General Service Regiment * 94th Engineer General Service Regiment * 95th Engineer General Service Regiment * 96th Engineer General Service Regiment * 97th Engineer General Service Regiment * 98th Engineer General