"At the tail end of 1917, the Germans introduced a new type of gas to the battlefield, T-Leiche, or "corpse gas," and changed the face of the war by resurrecting the bodies of the dead, giving the enemy an almost unlimited source of fresh troops. When the American ace Major Jack Freeman-poster boy for the war against the Kaiser's undead army of shamblers-is downed over enemy lines and taken captive, veteran Captain Michael ''Madman'' Burke is the...