The Ohio Reservation is basically a place to have plaques for all the Ohio units that were not engaged on Missionary Ridge. In all there are 18 Ohio plaques here. There is also a plaque for the 5th Company of Washington Artillery that was positioned here during the battle.
The 5th Company of Washington Artillery was positioned here but had to leave this position after being flanked on both sides. The men tried to escape to the rear but abandoned four guns after they became mired in a ravine to the rear of this position.