'Fall Gelb' is an expansion for the base-game History of War which introduces the French forces into the game. The expansion consists of two sets - one with the French forces and one with the German forces. The expansion may not be played stand-alone although there are included new base improvements, territory improvements, upgrades and action cards as well. But the mixture of the cards concentrates on the units of each side.Expands History of War - BoardGameGeek