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3rd Battery Mounted Artillery

Was organized at Augusta, Me., December 11th, 1861; remained encamped until March 19th, 1862, when it left for Portland, where, after remaining in barracks at Island Park until April 1st, they left for Washington, arriving in that city on the 3rd.

They were detached on the 14th to act as Pontooniers under Gen. McDowell, in which capacity they served until Nov. 7th, when they returned to Fort Lincoln, where they were engaged in building battery "Maine."

On the 28th of March, 1863, the third battery was transferred to the 1st Regiment Heavy Artillery, Me. Vols., and assigned as Company M.

On the 5th of Jan., 1864, 72 men, three-fourths of the whole number of men then belonging to the Battery, re-enlisted for three years and arrived at Augusta, Me., Jan. 21st, when the men were granted a furlough of 30 days, rendezvoused at Augusta the on the 22d of Feb., preparatory to rejoining the 1st Heavy Artillery.

At this date, however, orders were received from the War Department, detaching the organization from the latter regiment, and re-organizing it as the 3d Battery of M’td Artillery, with orders to report at Camp Barry, Washington, D. C., where they arrived on the 28th of Feb.

The Battery remained at Camp Barry until the 5th of July, when it proceeded to City Point, Va., and on the 9th was assigned to the 3d Division of the 9th Army Corps, then in position in front of Petersburg, before the rebel works in front of Cemetery Hill, which position in occupied until the 19th of Aug., during the interval being more or less engaged daily with the enemy’s batteries.

It bore an honorable part in the General engagement of July 30th, -- the mine explosion.

On the 30th of Aug., the battery was transferred to the Reserve Artillery Corps, Army of the Potomac, and on the 25th of October, moved to the defenses of City Point, having been in position in the trenches before the rebel works in front of Petersburg from the 9th of July to the 25th of October, with but three days exception.

The battery remained on duty at the defenses of City Point until May 3d, 1865, when it proceeded to Washington, D. C., and on the 2d of June left of that place for Maine, arriving at Augusta on the 6th, where, on the 17th, it was mustered out of the U. S. service by Capt. W. G. Rankin, 13th U. S. Infantry, and on the 22nd the men were paid and finally discharged.