Frank Leslie's Illustrated Newspaper… (1864)
“ J. J. Ahert, became Second Lieutenant in the 4th artillery, June 18, 1885, and First Lieutenant March, 1857. On the 14th of May, 1861, he was made Captain in the 6th cavalry, and holds the position of Inspector-General, with the rank of Lieutenant-Colonel. Col. E. G. Beckwiib, the Chief Commissary, was a cadet in 1838, and in 1842 entered the 2d artillery; in 1846 he rose to the grade of First Lieutenant, and became Captain in 1855. He has held the rank of Colonel on the staff since 1862. ”
