Since I first started going to Fort Donelson they have added guns for the upper water battery. This battery was intended more to disrupt a landing party than to drive off the gunboats. The Union never got close enough to try to land a force to assault the water battery. If there had been a landing the guns in the water battery could not have depressed their muzzles enough to hit the attacking force. But these guns would have been placed just right to sweep the slope in front of the water battery and would have caused much destruction and confusion.