Thanks very much for the useful reference. After going through the roster of surgeons and assistant surgeons during the Ante Bellum period I was able to ascertain that the officer in question was Surgeon Charles McDougall, who served in the Medical Department from 1831-1868. Akin to modern doctors, Bvt. Brig. Gen. McDougall had bad handwriting--but, from what I can deciper thus far, wrote a newsly four page letter on the Army's state of affairs for 1853.
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