Following along with the last post on the Confederate ammunition supply here is another item from the same period. Please excuse the quality of the scan.
The interesting point here is that Alexander is being called on to move guns to support the Third Corps. Pendelton expressing the opinion that both the Second and Third Corps reserves are exhausted. Also that if Alexander couldn’t find Lindsey Walker, he could go directly to the battalion commander in the area, Richardson and work out the details.
Also that the artillery commanders of all the corps, along with Martin Smith, were cooperating at least to some extent on the defenses.
An interesting document which tells us a bit about the stress the army was under during those days.