This Regiment was organized at Portland, Me., Sept. 30th, 1862, to serve nine months, and left Oct. 20th for Washington, D. C., arriving in that city on the 22d.

On the 26th they marched to Camp Chase, on Arlington Heights, Va., and on the 28th to Camp Seward, where they were engaged in picket duty until the 12th of December, when they marched to Camp Vermont, south of Hunting Creek, Va., and there guarded a picket line eight miles in length, extending from the Potomac near Mount Vernon to the Orange and Alexandria Railroad.

They continued in that duty until the 24th of March, 1863, on which day they moved to Chantilly, Va., and commenced picket duty on the outermost line of infantry in the Defences of Washington.

On the 25th of June they returned to Arlington Heights, Va.

The term of service of the regiment having expired, they were at liberty to return home; but a large portion, at the request of the President and Secretary of War, volunteered to serve a short time longer to aid, if necessary, in defending the capital against the rebel General Lee, who had at that time commenced the invasion of Pennsylvania.

On the 4th of July they left for Maine, and arrived at Portland on the 6th.

On the 17th of July the regiment was mustered out of the U. S. service at Portland, Me., by Lieut F. E. Crossman, 17th U. S. Infantry, and the men were paid and finally discharged on the same day.