I spent 8hrs or so in Chemo today, so my head is all over the place. But the gist of what I was trying to say is, all the military colleges teach these types of tactics going all the way back to the ancient Greeks and Romans and Alexander the Great etc.
Stonewall Jackson taught at WestPoint although he did so reluctantly. He studied this stuff constantly and but also relied heavily on Bible scripture and prayer. If Stonewall was still alive at Gettysburg, Lee would of used him instead of Longstreet's cav, and the CSA would of won that battle imo.