The regiment left Maine for Washington, D.C., October 16. Attached to Casey's Division, Defenses of Washington, to February 1863. 1st Brigade, Casey's Division, XXII Corps, to April 1863. 1st Brigade, Abercrombie's Division, XXII Corps, to July 1863. Served garrison duty in the defenses of Washington, D.C., October 18, 1862, to March 24, 1863. Moved to Chantilly, Virginia, March 24, and on picket duty there until June 26. (Temporarily attached to XII Corps, Army of the Potomac.) Moved to Arlington Heights June 26, then ordered home June 30.[2]
The regiment lost a total of 20 enlisted men during service, all due to disease.
One casualty was Charles H. Hill, who died Dec. 28, 1862 buried at Pine Grove Cemetery in Brunswick, ME (same cemetery as Joshua Chamberlain).
Commanders
Colonel Francis Fessenden
Notable members
1st Lieutenant Thomas Hamlin Hubbard, adjutant - philanthropist and president of the Peary Arctic Club