Oct. 30, 1863.
Discharged (disability), Oct. 13, 1864.
O'Brien, John S.
Second Lieutenant, 48th Infantry, M. V. M., in service of the U. S., Jan. 15, 1863.
Resigned, Mar. 7, 1863.
O'Brien, Martin.
Second Lieutenant, 9th Mass. Infantry, Sept. 26, 1862. First Lieutenant, Oct. 20, 1862.
Captain, July 29, 1863.
Mustered out, June 21, 1864.
O'Brien, William J.
First Lieutenant, 24th Mass. Infantry, Oct. 14, 1864.
Captain, Oct. 15, 1864.
Mustered out, Jan. 20, 1866.
O'Conner, James.
Second Lieutenant, 37th Mass. Infantry, May 24, 1864. First Lieutenant, Feb. 1, 1865.
Transferred to 20th Mass. Infantry.
Mustered out, July 15, 1865.
Odell, George D.
First Lieutenant, 5th Mass. Cavalry, Mar. 8, 1864.
Mustered out, Oct. 31, 1865.
Odiorne, Frederic.
Second Lieutenant, 44th Infantry, M. V. M., in service of the U. S., Sept. 12, 1862.
Mustered out, June 18, 1863.
O'Donnell, James.
Second Lieutenant, 9th Mass. Infantry, Feb. 8, 1863. First Lieuten