Supply is a key factor in this game, as it was in the historical campaign. Supply is typically provided by supply units, which are indicated by markers on the map. Each side must have a chain of these markers back to a supply base, with each supply unit within 20 movement points of the next. Supply units can be captured or moved about by each player's truck unit, but both sides normally only receive one such unit. As the truck only has 40 MP and must move back and forth to carry the supply units, this can severely hinder the advance of a supply line. Additional truck units may be generated by immobilising combat units.