 The corps was scattered after the Battle of Endor (4 ABY).Imperial Stormtrooper Corps (ISC) are elite corps of rapid response all-environment shock troops—organized like the Marine Corps with their own separate divisions.The Stormtroopers operate in conjunction with the Army Ground Troopers and Navy Marine Troopers—who were used as garrison forces—to reinforce and hold defensive positions until the regular military arrived.