Soldiers want to learn. As a case in point, during a break in a mission when I was a platoon leader, I made a casual reference to the fight on Little Round Top during the Battle of Gettysburg. Several of my Soldiers asked why it was important, which led to me drawing out a map of the battle on an MRE box and talking through the various maneuvers. At one point I looked up, and was surprised to see the majority of the platoon crowding around to see the map. Being engineers, they quickly grasped how important terrain was in the battle and how the human terrain can be manipulated by good leaders. This was a learning point for me, that history is useful at all levels.
Teaching Army history does not have to be for staff officers at War College only; it can, and should, exist throughout all formations, at every rank. Soldiers want to learn and want to be trained; it is up to the leaders to bring them the training that they deserve. If a private in the Marine Corps can talk knowledgeably about Belleau Wood (and they can, ask one), there is no reason a private in the Army cannot talk about Bastogne. If nothing else, let’s do this to be better than the Marines.