Before visiting a military park or CW battlefield, I will do a lot of research on the participants, the battles, etc. Don't want to look like a tourist.
I'm so glad I read Dave Powell's Chickamauga books before visiting the battlefield. The morning was cold, and the woods were wonderfully quiet. Perfect.
You might think Gen so-n-so made a poor decision. Visit the battlefield and get the visual perspective. This enhances the understanding of why the Gen did what he did
The undulating fields at Marye's Heights that prevented the Confeds from hearing the Feds coming up the hills or seeing them as the enemy appeared and disappeared with the undulations of the land. Hollow victory for the Confeds.