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9th Massachusetts Infantry
in the Civil War

Regimental History
Ninth Infantry. — Cols., Thomas Cass, Patrick R. Guiney; Lieut.- Cols., Cromwell G. Rowell, Robert Peard, Patrick R. Guiney, Patrick T. Hanley; Majs., Robert Peard, Patrick R. Guiney, Patrick T. Hanley, George W. Dutton, John W. Mahan. The 9th was made up of Irishmen and was mustered in for three years at Boston, June 11, 1861. It was mustered out on Boston Common, June 21, 1864, the recruits and reenlisted men being then transferred to the 32nd Mass. infantry. Before it left Boston, the regiment was presented by the Irish citizens of the city with a national flag and also a beautiful Irish banner. It left Boston on June 25 for Washington, in which vicinity it remained till the following March, when it was assigned to the Army of the Potomac for the Peninsular campaign. At the battle of Hanover Court House the 9th made a gallant assault and it lost heavily at Gaines' mill, where their brave leader, Col. Cass, was mortally wounded. It also suffered severely at Malvern hill. The regiment was in reserve at Antietam, the second Bull Run and Fredericksburg, and was engaged in skirmishing at Chancellorsville and Gettysburg. It joined in the pursuit of Lee to Williamsport and in the different movements of the Army of the Potomac, including the battles at Rappahannock Station and the Mine Run campaign, after which it went into winter quarters at Bealeton, Va., until April 30, 1864, when it broke camp and May 4 found it at the Wilderness tavern. The following day it made a brave advance, fighting fiercely, and its record is a proud one in the engagements ensuing at Laurel hill, North Anna river, Bethesda Church and Cold Harbor. Massachusetts may well be proud of her Irish volunteers.

Regimental history taken from "The Union Army" by Federal Publishing Company, 1908 - Volume 1

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