From Sabin Wargames
PDF – Free

This simple solitaire game models a battalion assault supported by armor and artillery against hidden defenders supported by AT guns and mortars later in WWII. Terrain and defending forces are generated randomly, and you will need to use realistic fire-and-movement tactics in order to prevail.
An earlier version of the system was published in the author's book, Simulating War, and the British Army has published and used a deluxe boxed edition of the simpler spin-off, Take That Hill, as a training aid.
The download includes full-color print-and-play components and a complete illustrated sample game, and a new video shows another complete game played with miniature figures on 3D terrain.