4th Battery Mounted Artillery
Was organized Dec. 21st, 1861, and left Augusta, Me., Mar. 14th, 1862, for Portland, Me, where it remained until April 1st, when it left for Washington, arriving in that city on the night of the 3d, and on the 15th was stationed at Fort Ramsey, seven miles from Alexandria.
On the 17th of May, the Battery returned to Washington, and on the 28th of June it proceeded to Harper’s Ferry, Va., and marched up the valley of the Shenandoah with Gen. Sigel's command.
On the 9th of Aug., it participated in the battle of Cedar Mountain, losing one man killed, six wounded and one missing.
On the 11th of August, the battery returned to Culpepper with Gen. Bank’s Corps, and remained there until the 19th, when it proceeded to the Rappahannock River and protected the bridge at the Railroad crossing, and on the following day repulsed a rebel battery attempting to get into position opposite the battery
On the same day they rejoined their Corps at Sulfur Springs, Va., where on the 12th they had a brisk engagement with one of the enemy’s batteries.
On the 25th they moved to Warrenton, and from there was a the retreating forces of Gen. Pope to Washington, arriving at Fort Worth on the 2d of September.
On the 4th, they moved to Tennallytown, and on the 17th of Sept. participated in the battle of Antietam.
On the 20th, the enemy having retreated, the battery proceeded to Harper’s Ferry and took position on Maryland Heights.
They moved to Shephardstown, Md., on the 30th of Oct., and encamped, remaining there until the 9th of Dec., when the battery returned to Harper’s Ferry and took position on Bolivar Heights, Va., engaged in garrison and picket duty until April 7th, 1863, on which day it crossed the Potomac and took position on the Maryland Heights, remaining there until June 30th, when, the forces at Winchester under Gen. Milroy having been defeated, the battery, with the garrison at Harper’s Ferry, evacuated that position and retreated to Monocacy Junction, and on the 8th of July was assigned to the 3d Corps, General French commanding.
On the 22nd of July it was engaged in the fight at Wapping Heights, Va., and on the 15th of Oct. had a sharp fight with a rebel battery at McLeans Ford, Va.
The battery also participated in the action at the crossing of the Rappahannock at Kelly's Ford on the 7th of Nov., and on the 11th went into camp near Brandy Station, where they remained until the 26th, and on the 30th took part in the engagement at Mine Run.
On the first of Dec. the battery retreated to Brandy Station, arriving at that place on the 3d and encamped, remaining there until the 31st of March, 1864, when the 3d Army Corps being discontinued as a separate organization, the Battery was assigned to the Artillery Brigade, 6th Army Corps, with which it crossed the Rapidan on the 6th of May, and was engaged with the enemy on the 21st, for the first time during the campaign.
On the 1st of June it fought the enemy at Cold Harbor for three hours, and on the 17th took position in front of Petersburg, which it left on the 13th of July for Washington to join the 6th Corps, then around that city confronting Early’s forces; but the Corps having advanced towards Harper’s Ferry, the Battery returned to Petersburg, having been assigned temporarily to the 5th Corps.
It participated in the action of July 30th, losing two men wounded.
On the 21st of Dec., the three years term of service expired, at which time 21 of the original members were mustered out, but the Battery remained in service until June 17th, 1865, when it was mustered out and discharged the U. S. service at Augusta, Me., by Capt. W. G. Rankin, 13th U.S. infantry, in accordance with orders from the War Department.