Gone World (The Third Party)
Brick Johnson, a U.S. Army sergeant, fought the war from the beginning. On a major push against the Russians, his unit gets ambushed instead. Fleeing, he stumbles upon an unknown combatant near a city occupied by the Russians, and things get deadly.
With his brigade shattered, his unit dead, and the fate of the war unknown, Brick has to decide if he will go on with the fight or lay down his arms.