For M E Wolf's additional definitions, I think we have a number of generals who could read the topography well and use it to their advantage. Jeb Stuart had a particularly good eye for the lay of the land. Forrest was excellent with this: one example is at Fallen Timbers he didn't just use obstacles but had a specific type of area in mind - he chose where the battle would be. It was slightly uphill, tangled with fallen logs and brambles, and muddy - boggy places would form all over here. He knew infantry was behind him and they would have hard going. Sure enough, he saw the line breaking up as the men approached and when they were disorganized enough he charged. Sherman apparently never got it and thought his men had run for no reason - Forrest had all the advantages! Another good one was the combination of land features and weather, at Brice's Crossroads. It might have been the first time in the CW that weather was consciously used as a weapon against the enemy! Forrest knew Mississippi in June - hot and muggy - and knew the Union soldiers would be running in wool.