The following rules will help you incorporate these new units into your AMERIKA game. Feel free to pick and choose which ones to use so long as all players agree. These can help balance the game when players of differing skill levels play against each other, or add new dimensions and strategy for advanced players. The German army was known for big tanks and big guns. But this incredible mortar redefined “siege cannon”. Used for many years against European and Russian opponents, this fearsome gun is ready for export to the American Front. -description from publisher