Crossing the Line - Aachen 1944 - Upgrade Kit with mounted mapboardLIVING RULES AND ERRATA UPDATES CAN BE FOUND HERE Crossing the Line Aachen 1944 is an award winning operational level simulation of the Battle for Aachen, which took place from September 12th to October 21st, 1944. The game is intended for two players but is suitable for solitaire and team play. The game is played in a semi interactive way, as only one division of the active player. Components of the Upgrade Kit: Mounted Map Updated Rulebook Solitaire