'Reinforcements: New U.S. and Soviet Units for Assault. Now you can have a complete set: with this module, plus Assault and Boots & Saddles, you will have counters for every type of U.S. and Soviet maneuver unit likely to be in central Europe . . . This module contains a system designed to allow players to create their own force levels and victory multipliers for Assault scenarios.'Reinforcements was the first Assault Series module, and it required Assault or Boots & Saddles to play.The Assault game system used 250 meter hexes, 5 minute turns, and platoon/section sized units. The other games/modules in the series were: Assault, Boots & Saddles, Chieftan, and Bundeswehr. One additional module, Close Air Support, was announced but apparently never released.Expands: Assault Boots & Saddles - BoardGameGeek