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Field & Staff---NCO Staff---Unassigned--Reads Company
Organized as 41st Massachusetts Infantry. Designation changed to 3rd Cavalry June 17, 1863. Company "A," 33rd Massachusetts Infantry, assigned as Company "I," 2nd Battalion, Massachusetts Cavalry, assigned as Companies "L" and "M." Attached to 2nd Brigade, 4th Division, 19th Army Corps, Army of the Gulf, to June, 1863. Cavalry Brigade, Dept. of the Gulf, to July, 1863. Defenses of New Orleans to August, 1863. Cavalry Brigade, District of Port Hudson, La., Dept. of the Gulf, to October, 1863. Unattached, Cavalry Division, Dept. of the Gulf, to January, 1864. 4th Brigade, Cavalry Division, Dept. of the Gulf, to June, 1864. 2nd Brigade, 2nd Division, 19th Army Corps. Dept. of the Gulf and Army of Shenandoah, Middle Military Division, to February, 1865. Reserve Cavalry Brigade, Army of Shenandoah, to April, 1865. Defenses of Washington, D.C., 22nd Army Corps, to June, 1865. Dept. of Missouri to September, 1865.
SERVICE.--Siege of Port Hudson, La., June 17-July 9, 1863. Duty at Port Hudson until January, 1864, scouting, outpost and patrol duty. Action at Jackson August 3. 1863. Plain's Store November 30. Ordered to New Orleans, La., January 2, 1864. Duty at Carrollton until February 29. March to Berwick and Brashear City February 29-March 10. Red River Campaign March 10-May 22. Advance from Franklin to Alexandria March 14-26. Monett's Ferry and Cloutiersville March 29-30. Natchitoches March 31. Crump's Hill, Piney Woods, April 2. Bayou de Paul, Carroll's Mills, April 8. Sabine Cross Roads April 8. Pleasant Hill April 9. Natchitoches April 19. Monett's Bluff, Cane River Crossing, April 23. Hudnot's Plantation and Alexandria May 1. Mansura May 4. Retreat to Morganza May 13-20. Mansura May 16. Moreauville May 17. Yellow Bayou May 18. Dismounted June 25 and equipped as Infantry. Moved from Morganza to New Orleans, La., July 3; thence to Fortress Monroe, Va., and Washington, D.C., July 15-28. Moved to Monocacy, Md., July 29; thence to Harper's Ferry, W. Va., August 4, Sheridan's Shenandoah Valley Campaign August 7-November 28. Battle of Opequan, Winchester, September 19. Fisher's Hill September 22. Battle of Cedar Creek October 19. At Cedar Creek until November 9. At Opequan Creek, near Winchester, until December 25. Moved to Stephenson's Landing, thence to Remount Camp, Pleasant Valley, Md., December 25-28, and duty there until February 24, 1865. Again mounted and equipped as Cavalry February 15. Moved to Opequan Creek March 8. Scout to Front Royal March 16. Scout to Woodstock April 1. Duty at Cedar Creek, Edinburg, Winchester and Berryville until April 20. Moved to Washington, D.C., April 20-22, and duty at Fall's Church until May 22. Grand Review May 23-24. Old members mustered out May 20, 1865. Company "L" mustered out December 27, 1864, and Company "M" January 31, 1865. Duty at Bladensburg and Cloud's Mills until June 14. Moved to St. Louis, Mo., June 14-20; thence to Fort Leavenworth, Kansas, June 21-25. Regiment consolidated to 6 Companies July 21. March to Fort Kearney, Neb., July 27-August 16. March to Cottonwood Springs, Colo., August 23-28; thence to Fort Kearney August 29-September 1, and to Fort Leavenworth September 8-18. Mustered out September 28, 1865. Moved to Boston, Mass., September 29-October 5, and discharged October 8, 1865.
Regiment lost during service 5 Officers and 101 Enlisted men killed and mortally wounded and 2 Officers and 180 Enlisted men by disease. Total 288.