1st Massachusetts Cavalry Regiment


The 1st Massachusetts Volunteer Cavalry Regiment was a cavalry regiment that served in the Union Army during the American Civil War.

Service

The 1st Massachusetts Cavalry was organized at Camp Brigham in Readville, Massachusetts beginning September 3, 1861 and mustered in under the command of Colonel Robert Williams.
The regiment was attached to the Department of the South to April 1862. 3rd Brigade, 1st Division, Department of the South, to August 1862. Companies A through H moved to Fort Monroe August 19, 1862, then moved to Washington, D.C., and joined Pleasanton's Cavalry, Army of the Potomac, at Tenallytown, September 3. Attached to Pleasanton's Cavalry, Army of the Potomac, to October 1862. Averill's Brigade, Cavalry Division, Army of the Potomac, to January 1863. 1st Brigade, 2nd Division, Cavalry Corps, Army of the Potomac, to April 1865. Four new companies were organized December 5. 1863 to January 14, 1864. Provost Marshal's Command, Army of the Potomac, to May 1865. Headquarters, Army of the Potomac, to June 1865.
The 1st Massachusetts Cavalry mustered out of service on June 29, 1865 and was discharged at Readville on July 24, 1865.

Detailed service

1861

Third Battalion
Third Battalion was permanently detached from the 1st Massachusetts Cavalry by S. C. 346, War Department, August 4, 1863, and designated Independent Battalion, Massachusetts Cavalry.

Casualties

The regiment lost a total of 239 men during service; 6 officers and 93 enlisted men killed or mortally wounded, 140 enlisted men died of disease.

Commanders