This new GMT boxed version of 1918/19: Storm in the West is a two-player system that also works fine for solo play.  Units are mostly corps (divisions for the USA, whose oversized units were nearly the size of Allied corps), and include infantry, tanks, cavalry and air support. The Germans start the 1918 campaign with large numbers of Stosstruppen, trained to overcome the trench stalemate of the previous three years. This gives the German player a strong offensive capability in the first half of the game. But these “shock troops” are a wasting asset, and if the Allies survive the initial blows, growing numbers of US troops and Allied tanks will see the Germans forced into a desperate defense in the game's second half.