Charles Dimmock Compiled Service Record, M331, National Archives
The order of promotion of Corporal Mann to be Lieut and that he should report to me for duty, I have received. As he knows nothing of ordnance duties and will be in hourly contact with his soldier companions. I suggest if it would not be better to give him some other station. He will make an excellent drill officer.
Very Respy Yours
Send him to Col. Magruder.
R. E. Lee