9th Regiment Massachusetts Volunteer Infantry

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9th Regiment Massachusetts Volunteer Infantry
Statue of Colonel Thomas Cass, Commander of the Ninth Regiment Massachusetts Volunteers.JPG
Statue of Colonel Thomas Cass standing
in the Boston Public Garden
Active 11 June 1861–21 June 1864
Country  United States of America
Allegiance Union
Branch United States Army
Type Infantry
Part of In 1863: Sweitzer's Brigade, Barnes's Division, V Corps, Army of the Potomac
Motto "The Fighting Ninth"
Commanders
Notable
commanders
Col. Thomas Cass
Col. Patrick Robert Guiney
Insignia
V Corps badge Vcorpsbadge.png

The 9th Regiment Massachusetts Volunteer Infantry was a military unit from Boston, Massachusetts, USA, part of the Army of the Potomac during the American Civil War. It is also known as "The Fighting Ninth". It existed from 1861 to 1864 and participated in several key battles during the war. The unit is an Irish heritage unit, with many volunteers having been born in Ireland.

History[edit]

The Ninth Regiment was created on 11 June 1861 under the command of Colonel Thomas Cass in Boston recruiting primarily Irish-Americans. Initial funding for the regiment came from Patrick Donahoe, publisher of The Boston Pilot. Initially sheltered at Boston's Faneuil Hall, they later camped at Long Island in Boston Harbor.

On 30 June 1861, the unit arrived in the Washington, D.C. vicinity and was welcomed by President Abraham Lincoln. They remained in the vicinity of Arlington Virginia performing picket duty and built a fort on the Potomac River called Fort Cass after their commanding officer. As a unit of the Army of the Potomac under the command of Major General George B. McClellan, the regiment moved south with the rest of the Army in pursuit of the confederate forces.

On 26 June 1862 the regiment participated in the Battle of Mechanicsville, about six miles from Richmond Virginia which resulted in a Union Army victory and more than 2,000 Confederate casualties. The next day the regiment was assigned to hold the bridge over the mill creek in the action that later became known as the Battle of Gaines Mill. The regiment was told to hold the bridge pending the arrival of two supporting regiments. The support troops were delayed in their arrival new and the Ninth Regiment successfully repelled several Confederate assaults on the bridge. The supporting troops, including a regiment of New York Irishmen, the 63rd New York eventually arrived, but by this point the opposing forces had built their strength and the Ninth was unable to hold the bridge. Eventually the Confederate forces led by General James Longstreet and General Ambrose Powell Hill, broke the Union line forcing the Union Army into retreat. The Ninth Regiment brought up the rear of the retreat fighting a rearguard action against the opposing forces. The Union Army lost 6,000 killed or wounded in this battle and the Ninth’s casualties totaled 252 men.

The Ninth participated in the Battle of Malvern Hill on 1 July 1862 as part of the Peninsular Campaign waged by the Union Army intending to capture the city of Richmond. The Ninth Regiment held the hill and prepared it to withstand a siege by the Confederate Army. Supported by five US Navy gunboats on the nearby James River, and benefiting from favorable geography and extensive defensive preparations, the Union Army withstood repeated charges inflicting heavy casualties on the Southern forces. It was in this battle that Colonel Cass received a mortal wound in his face and mouth that eventually took his life. When Colonel Cass fell in battle, command of the Ninth was assumed by Acting Lieutenant Colonel Hawley. Colonel Hawley was subsequently wounded in the same action, and command fell to Acting Major, Captain O’Leary. The unit’s casualties were very heavy; along with losing their two top commanders, roughly half the regiment was put out of action, totaling 166 men. Colonel Cass died in Boston Massachusetts on 12 July 1862 and was buried with full military honors at Mt Auburn cemetery. Today, a statue of the Colonel stands in the Boston Public Garden.

Following the death of its commander, Colonel Patrick Robert Guiney took command of the regiment on 4 August 1862. At this point the Ninth took its place in the newly formed Army of Virginia under the command of General John Pope. The regiment participated in the Second Battle of Bull Run, which resulted in a decisive defeat for the Northern Army. News of the defeat at Bull Run so shook the inhabitants of Washington DC that plans were made to abandon the city before the arrival of the Confederate Army. At his urging, General George Brinton McClellan was given command of the Army of the Potomac and led the army to Antietam Creek near Sharpsburg, Maryland on 17 September 1862 where they successfully engaged General Robert E. Lee’s army.

The regiment subsequently played supporting roles in the Battle of Fredericksburg and the Battle of Chancellorsville. On 2–4 July 1863 the regiment was assigned to hold the strategically important position of Big Round Top during the Battle of Gettysburg. With the help of substantial stone breastworks, the regiment successfully withstood several assaults by the Confederate Army, taking casualties of 15 killed, wounded, or missing.

The regiment received orders on 30 April 1864 to meet the enemy under the command of General Ulysses S. Grant. The regiment participated in the Battle of the Wilderness in Virginia which resulted in the wounding of Colonel Guiney in the eye. Command of the regiment fell to Lieutenant Colonel Hanley. Along with Colonel Guiney, the regiment suffered casualties of 138 men.

It suffered more severe losses at the Orange Turnpike, losing 78 men killed and wounded. The regiment continued to fight at North Anna River and Bethesda Church near Cold Harbor with light losses. On 10 June 1864, the Fighting 9th withdrew from the field and was transported to Boston Harbor, arriving on 15 June. The regiment was mustered out of the Army on 24 June 1864.

Following the battle, the Ninth's three years of service was completed. Men whose terms of service had not yet expired were transferred to the Thirty-second Massachusetts Veteran Volunteers, and the Ninth returned to Boston on 15 June 1864. Following a welcoming parade and banquet at Faneuil Hall, the men of the regiment were mustered out in a ceremony on Boston Common on 21 June 1864 and the regiment was disbanded.

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