Siege is a game mode in Wargame: European Escalation and Wargame: AirLand Battle. From the two opposing sides, one has been assigned the role of defenders, deploying in the center of the battlefield, while the other side, the attackers, deploying around the map.
Since the defenders do not have any reinforcement zones, they do not have the ability to deploy any unit after the pre-game deployment. After deployment, this game mode uses the same mechanics as Destruction. The defender in the center will have to fend off and eliminate the attackers, while the attackers will have to eliminate all of the defenders forces.