Designed to be a playable regimental-scale simulation.
Chickasaw Bayou was a grand missed opportunity for the Union Army in its desire to crush the Rebellion. If they had proceeded with haste, the Federals could have captured Vicksburg and delivered a master stroke against the Rebels a sure seven months before Vicksburg surrendered on July 4th 1863.
The Union player is as much fighting against the terrain as the Confederate Army. The third player are the Swamps of Chickasaw Bayou and they are no friend of the Union player.
—description from the designer