A maverick CIA agent navigates a minefield of dirty tricks and black operatives as he embarks on a globe-hopping search for the legendary military operative known only as Codename Unknown Soldier. Sergeant Rock meets Apocalypse Now in this fast-paced tale by Garth Ennis and Kilian Plunkett that explores battlefield morality and the complex nature of patriotism.<br><br>Collects #1-4.