Massachusetts in the Civil War

Regiments

 * 1st Battalion, Massachusetts Heavy Artillery 1st Battalion, Massachusetts Heavy Artillery Organized April, 1865, from 1st, 2nd and 4th Unattached Companies Heavy Artillery. Mustered out May 25, 1864. Expiration of term


 * 1st Unattached Company, Massachusetts Infantry (Militia) Mustered in for 90 days' service April 29, 1864. Duty at Fort Independence, Boston Harbor. Mustered out August 1, 1864.


 * 1st Company, Massachusetts Sharpshooters Organized at Lynnfield and mustered in September 2, 1861. Mustered out September 6, 1864.


 * 1st Regiment, Massachusetts Heavy Artillery Organized as 14th Massachusetts Infantry July 5, 1861. Mustered out June 29, 1865, and discharged at Readville, Mass., July 24, 1865.


 * 1st Regiment, Massachusetts Calvalry Organized at Camp Brigham, Reedville, and duty there till December 25, 1861. Mustered out June 29, 1865, and discharged at Readville, Mass., July 24, 1865.


 * 1st Independent Battery, Massachusetts Light Artillery Organized at Camp Cameron August 27, 1861. Left State for Washington, D. C., October 3. Mustered out October 19, 1864, expiration of term.


 * 2nd Unattached Company, Massachusetts Infantry Organized November 3, 1862, for garrison duty in the forts of Boston Harbor, on duty at Fort Warren till April, 1863, when assigned to 1st Battalion Heavy Artillery as Company "B".


 * 2nd Unattached Company, Massachusetts Infantry (Militia)(90 days, 1864) Organized November 3, 1862, for garrison duty in the forts of Boston Harbor, duty at Fort Warren till April, 1863, when assigned to 1st Battalion Heavy Artillery as Company "B".


 * 2nd Unattached Company, Massachusetts Infantry (Militia)(100 days, 1864) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 2nd Unattached Company, Massachusetts Infantry (Militia) Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 2nd Company, Massachusetts Sharpshooters Organized at Lynnfield September 3, 1861. Mustered out October 17, 1864.


 * 2nd Regiment, Massachusetts Heavy Artillery Organized at Readville and mustered in: Company "A" July 28, 1863 Company "B" July 29, 1863; Company "C" August 4, 1863; Company "D" August 22, 1863, and left State for New Berne, N. C., September 5, 1863. Company "E" October 5, 1863, Company "F" October 8, 1863. Left State for New Berne, N. C., November 7, 1863. Company "G" December 7, 1863. Company "H" December 7, 1863. Company "I" December 11, 1863. Companies "K" and "L" December 22, 1883. Company "M," December 24, 1863. Mustered out September 23, 1865.


 * 2nd Regiment, Massachusetts Cavalry Organized at Readville and mustered in Company "A" July 28, 1863; Company "B" July 29, 1863; Company "C" August 4, 1863; Company "D" August 22, 1863, and left State for New Berne, N. C., September 5, 1863. Company "E" October 5, 1863, and Company "F" October 8, 1863. Left State for New Berne, N. C., November 7, 1863. Company "G" December 7, 1863. Company "H" December 7, 1863. Company "I" December 11, 1863. Companies "K" and "L" December 22, 1883, and Company "M," December 24, 1863. Fairfax Court House till July 20. Mustered out July 20, 1865.


 * 2nd Regiment, Massachusetts Infantry Organized at Camp Andrew, West Roxbury, and mustered in May 25, 1861. Mustered out July 11, and discharged at Boston, Mass., July 26, 1865.


 * 2nd Independent Battery, Massachusetts Light Artillery Organized at Quincy and mustered in July 31, 1861. .Mustered out August 11, 1865


 * 3rd Battalion, Massachusetts Riflemen (Militia) Organized at Worcester. Moved to New York April 20, 1861. Fort McHenry. Mustered out August 3, 1861.


 * 3rd Unattached Company, Massachusetts Infantry (Militia) Mustered in for 90 days' service May 3, 1864. Mustered out August 5, 1864.


 * 3rd Regiment, Massachusetts Heavy Artillery Organized for one year August, 1864, by consolidation of 3rd, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th and 16th Unattached Companies Heavy Artillery. Mustered out September 18, 1865.


 * 3rd Regiment, Massachusetts Cavalry Organized as 41st Massachusetts Infantry. Designation changed to 3rd Cavalry June 17, 1863. Moved to Boston, Mass., September 29-October 5, and discharged October 8, 1865.


 * 3rd Regiment, Massachusetts Infantry Organized at Lakeville September, 1862. Mustered out June 26, 1863.


 * 3rd Regiment, Massachusetts Infantry (Militia) Left Boston on Steamer "S. R. Spaulding" for Fortress Monroe, Va., April 17, 1861. Ordered home July 16, and mustered out July 22, 1861. Expiration of term.


 * 3rd Independent Battery, Massachusetts Light Artillery Organized at Boston September 5, 1861. Mustered out September 16, 1864.


 * 4th Battalion, Massachusetts Infantry (Militia) Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 4th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville, Mass., and mustered in for 90 days' service May 3, 1864. Mustered out August 6, 1864.


 * 4th Regiment, Massachusetts Heavy Artillery Organized November l2, 1864, by consolidation of the 17th, 18th, 19th, 20th, 21st, 22nd, 23rd, 24th, 25th, 26th, 27th and 28th Unattached Companies Heavy Artillery. Organized August, 1864, for one year's service.. Mustered out June 17, 1865.


 * 4th Regiment, Massachusetts Cavalry Organized at Readville December 26, 1863, to February 8, 1864. Regiment mustered out November 14, 1865. Discharged at Boston November 26, 1865.


 * 4th Regiment, Massachusetts Infantry Organized at Camp Joe Hooker, Lakeville, and mustered in September 23, 1862. Mustered out August 28, 1863.


 * 4th Regiment, Massachusetts Infantry (Militia) Organized at Boston May 27, 1862. Mustered out May 31, 1862.


 * 4th Regiment, Massachusetts Infantry (3 months, 1861) (Militia) Left Boston for Fortress Monroe, Va., on Steamer "State of Maine" April 17, 1861, arriving there April 20. Mustered out July 22, 1861.


 * 4th Independent Battery, Massachusetts Light Artillery Organized at Lowell November 17,1861. Mustered out November 10. 1865.


 * 5th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville, Mass., and mustered in for 90 days' service May 4, 1864. Mustered out August 2, 1864.


 * 5th Regiment, Massachusetts Heavy Artillery Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 5th Regiment, Massachusetts Cavalry (Colored) Organized at Camp Meigs, Readville. 1st Battalion moved to Washington, D. C., May 5-8, 1864. Mustered out October 31, 1865.


 * 5th Regiment, Massachusetts Infantry (9 months, 1862-63) Tendered services to government for nine months August 14, 1862. Moved to Boston June 22-25, and there mustered out July 2, 1863.


 * 5th Regiment, Massachusetts Infantry (100 days, 1864) (Militia)Tendered services to the government for 100 days July, 1864. Ordered home November 6, 1864. Mustered out November 16, 1864.


 * 5th Regiment, Massachusetts Infantry (3 months, 1861) (Militia) Tendered services to the government April 15, 1861. Ordered to Boston July 29, and there mustered out August 1, 1861.


 * [[5th Regiment, Massachusetts Infantry (Militia)|5th Regiment, Massachusetts Infantry (Militia) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 5th Independent Battery, Massachusetts Light Artillery Organized at Lynnfield and Reedville and mustered in December 10, 1861. Moved to Readville, Massachusetts, June 4-6, and there mustered out June 12, 1865.


 * 6th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service May 4, 1864. Duty at Readville. Mustered out August 2, 1864.


 * 6th Regiment, Massachusetts Infantry (9 months, 1862-63) Organized at Camp Wilson, Lowell, and mustered in August 31,1862. Moved to Boston May 26-29, 1863, and there mustered out June 3, 1863.


 * 6th Regiment, Massachusetts Infantry (100 days, 1864) (Militia) Organized at Readville and mustered in July 14-19, 1864. Moved to Boston October 19-21, 1864. Mustered out October 27, 1864.


 * 6th Regiment, Massachusetts Infantry (3 months, 1861) (Militia) Tendered services to government January 21, 1861. Relieved from duty July 29, and mustered out August 2, 1861.


 * 6th Regiment, Massachusetts Infantry (Militia) Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 6th Independent Battery, Massachusetts Light Artillery Organized at Camp Chase, Lowell, and mustered in January 20, 1862. Moved to Readville, Massachusetts, July 21-August 1, and there mustered out August 7, 1865.


 * 7th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service May 4, 1864. Mustered out August 5, 1864.


 * 7th Regiment, Massachusetts Infantry Organized at Taunton and mustered in June 15, 1861. Moved to Taunton, Massachusetts, June 16-20, and there mustered out July, 1864, expiration of term.


 * 7th Independent Battery, Massachusetts Light Artillery Organized at Lowell as Richardson's Light Guard; an Independent Infantry Company and mustered in May 21, 1861. Mustered out November 10, 1865.


 * 8th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service May 10, 1864. At Gallop's Island, Boston Harbor, until August. Mustered out August 11, 1864.


 * 8th Regiment, Massachusetts Cavalry "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 8th Independent Battery, Massachusetts Light Artillery Organized at North Cambridge for six months' service June 24, 1862. Mustered out November 2, 1862.


 * 8th Regiment, Massachusetts Infantry (9 months, 1862-63) Organized at Camp Lander, Wenham. Ordered home July 26 and mustered out August 7, 1863.


 * 8th Regiment, Massachusetts Infantry (100 days, 1864) Militia Organized at Readville July 13 to 26, 1864. Left State for Baltimore, Maryland, July 26. Moved to Massachusetts October 28, and mustered out November 10, 1864.


 * 8th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service May 10, 1864. At Gallop's Island, Boston Harbor, until August. Mustered out August 11, 1864.


 * 8th Regiment, Massachusetts Infantry (3 months, 1861) Militia One of the first four Regiments to respond to the call after opening of hostilities. Gathered at Boston April 16, 1861. Mustered out August 1, 1861.


 * 9th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service May 10, 1864. Mustered out August 11, 1864.


 * 9th Regiment, Massachusetts Infantry Organized at Boston June 11, 1861. Mustered out June 21.


 * 9th Independent Battery, Massachusetts Light Artillery Organized at Camp Meigs, Readville, and mustered in August 10, 1862. Mustered out at Gallop's Island, Boston Harbor,June 6, 1865.


 * 10th Regiment, Massachusetts Infantry Organized at Springfield June 21, 1861. Ordered home for muster out June 19. Mustered out July 6, 1864.


 * 10th Regiment, Massachusetts Heavy Artillery Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 10th Independent Battery, Massachusetts Light Artillery Organized at Lynnfield and mustered in September 9, 1862. Mustered out June 9 and discharged from service June 14, 1865.


 * 10th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service May 10, 1864. Mustered out August 8, 1864.


 * 11th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service May 16, 1864. Mustered out August 15, 1864.


 * 11th Regiment, Massachusetts Infantry Organized at Readville, mustered in June 13, 1861. Mustered out June 14, 1865.


 * 11th Independent Battery, Massachusetts Light Artillery Organized at Readville and mustered in for three years January 2, 1864. Mustered out June 16, 1865.


 * 11th Independent Battery, Massachusetts Light Artillery (9 months, 1862-63) Organized at Boston and mustered in at Readville for nine months' service August 25, 1862. Moved to Boston May 25-28, and there mustered out May 29, 1863.


 * 12th Independent Battery, Massachusetts Light Artillery Organized at Readville and mustered in for 90 days' service. Duty at Long's Point, Provincetown. Mustered out August 15, 1864.


 * 12th Unattached Company, Massachusetts Infantry (Militia) Organized at Fort Warren and mustered in June 26, 1861. Ordered home for muster out June 25. Mustered out July 8, 1864.


 * 12th Regiment, Massachusetts Infantry Organized at Readville October 3 to December 29, 1862. Mustered out July 25. 1865.


 * 13th Regiment, Massachusetts Infantry Organized at Readville and mustered in for 90 days' service May 16, 1864.Duty at Fort Clark's Point, New Bedford, Mass. Mustered out August 15, 1864.


 * 13th Unattached Company, Massachusetts Infantry (Militia) Organized at Fort Independence June 16, 1861. Mustered out August 1, 1864.


 * 13th Independent Battery, Massachusetts Light Artillery Organized at Readville and mustered in December 13, 1862. Mustered out July 28,1865.


 * 14th Independent Battery, Massachusetts Light Artillery Organized at Readville and mustered in February 27, 1864. Mustered out June 16, 1865.


 * 15th Independent Battery, Massachusetts Light Artillery Organized at Readville and mustered in for 90 days' service July 29, 1864. Stationed at Fort Warren, Boston Harbor. Mustered out November 15, 1864.


 * 15th Unattached Company, Massachusetts Infantry (Militia) Organized at Worcester and mustered in June 12, 1861. Mustered out July 28, 1864. Veterans and Recruits transferred to 20th Massachusetts.


 * 15th Regiment, Massachusetts Infantry Organized at Lowell and Fort Warren and mustered in February 17, 1863. Mustered out August 4, 1865.


 * 16th Unattached Company, Massachusetts Infantry Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 16th Independent Battery, Massachusetts Light Artillery Organized at Readville and mustered in for 90 days' service August 6, 1864. Mustered out November 14, 1864.


 * 16th Unattached Company, Massachusetts Infantry (Militia) Organized at Camp Cameron, Cambridge, June 29, 1861. Mustered out July 27, 1864.


 * 16th Regiment, Massachusetts Infantry Organized at Camp Meigs, Readville, and mustered in April 4, 1864. Ordered to Massachusetts and mustered out July 13, 1865.


 * 17th Regiment, Massachusetts Infantry Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 17th Unattached Company, Massachusetts Infantry Organized at Readville and mustered in for 90 days' service August 5, 1864. Mustered out November 12, 1864. Again mustered in for one year at Salem. Mustered out June 30, 1865.


 * 17th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 90 days' service August 5, 1864. Mustered out November 12, 1864. Again mustered in for one year at Salem. Mustered out June 30, 1865.


 * 17th Unattached Company, Massachusetts Infantry (Militia) (1 year, 1864-65) Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 17th Unattached Company, Massachusetts Infantry (Militia) (100 days, 1864) Organized at Lynnfield July 22, 1861. Mustered out at Greensboro, N. C., July 11, 1865.


 * 18th Unattached Company, Massachusetts Infantry Organized at Readville and mustered in for 100 days August 6, 1864. Duty at Camp Meigs, Readville. Mustered out November 14, 1864. Re-enlisted and mustered in for one year December 6,1864. Mustered out May 12, 1865.


 * 18th Unattached Company, Massachusetts Infantry (Militia) (100 days, 1864) Organized at Readville and mustered in for 100 days August 6, 1864. Duty at Camp Meigs, Readville. Mustered out November 14, 1864. Re-enlisted and mustered in for one year December 6, 1864 Duty at Camp Meigs, Readville. Mustered out May 12, 1865.


 * 18th Regiment, Massachusetts Infantry Organized at Readville and Boston and mustered in August 27, 1861. Consolidated with 32nd Massachusetts Infantry October 21, 1864.


 * 19th Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 100 days August 9, 1864. Mustered out November 16, 1864. Reorganized and mustered in for one year November 25, 1864. Mustered out June 27,1865.


 * 19th Regiment, Massachusetts Infantry Organized at Readville and mustered in for 100 days August 9, 1864. Mustered out June 27, 1865.


 * 19th Unattached Company, Massachusetts Infantry (1 year, 1864-65) Organized at Lynnfield August 28, 1861. Mustered out June 30 and discharged July 22, 1865.


 * 20th Unattached Company, Massachusetts Heavy Artillery Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 20th Regiment, Massachusetts InfantryOrganized at Readville and mustered in for 100 days August 11, 1864. Mustered out November 18, 1864. Again mustered in for one year November 17, 1864. Mustered out June 29, 1865.


 * 20th Unattached Company, Massachusetts Infantry (1 year,1864-65) Organized at Readville and mustered in for 100 days August 11, 1864. Mustered out November 18, 1864. Again mustered in for one year November 17, 1864. Mustered out June 29, 1865


 * 20th Unattached Company, Massachusetts Infantry (100 days, 1864)(Militia) Organized at Readville August 29 to September 4, 1861. Left State for Washington, D. C., September 4.Grand Review May 23. Duty at Washington until July 15. Mustered out July 16 and discharged July 28, 1865.


 * 21st Unattached Company, Massachusetts Infantry Organized at Readville and mustered in for 100 days August 11, 1864. Mustered out November 18, 1864. Reorganized at Fall River, Mass., for one year, and mustered in November 23, 1864. Stationed at Provincetown. Mustered out June 28, 1865.


 * 21st Unattached Company, Massachusetts Infantry (100 days,1864)(Militia) Organized at Readville and mustered in for 100 days August 11, 1864. Stationed at Long's Point, Provincetown. Mustered out November 18, 1864. Reorganized at Fall River, Mass., for one year. Mustered in November 23, 1864. Stationed at Provincetown. Mustered out June 28, 1865.


 * 21st Regiment, Massachusetts Infantry Organized at Worcester July 19 to August 19, 1861. Moved to Baltimore, Md., August 23-25; thence to Annapolis, Md., August 29; and duty there till January 6, 1862. Attached to Reno's 2nd Brigade, Burnside's Expeditionary Corps, to April, 1862. 2nd Brigade, 2nd Division, Dept. of North Carolina, to July, 1862. 2nd Brigade, 2nd Division, 9th Army Corps, Army of the Potomac, to April, 1863. 2nd Brigade, 2nd Division, 9th Army Corps, Dept. of the Ohio, to June, 1863. Unassigned, 1st Division, 23rd Army Corps, Dept. of the Ohio, to October, 1863. 1st Brigade, 2nd Division, 9th Army Corps, Dept. of the Ohio, to April, 1864. 2nd Brigade, 1st Division, 9th Army Corps, Army of the Potomac, to June, 1863. 1st Brigade, 1st Division, 9th Army Corps, to September, 1864. 2nd Brigade, 1st Division, 9th Army Corps, to October, 1864. Non-Veterans left front August 18 and mustered out August 30, 1864. Veterans and Recruits transferred to 36th Massachusetts Infantry October 21, 1864.


 * 22nd Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 100 days' service August 18, 1864. Duty at Camp Meigs, Readville. Mustered out November 2, 1864.
 * 22nd Regiment, Massachusetts Infantry Orginized at Lynnfield September 4 to October 6, 1861. Moved to Washington, D. C., October 8-11. Attached to Martindale's Brigade, Porter's Division, Army of the Potomac, to March, 1862. 1st Brigade, 1st Division, 3rd Army Corps, Army of the Potomac, to May, 1862. 1st Brigade, 1st Division, 5th Army Corps, to March, 1864. 2nd Brigade, 1st Division, 5th Army Corps, to October, 1864. Relieved August 8 and guard duty at City Point till October 5. Mustered out October 17, 1864.


 * 23rd Unattached Company, Massachusetts Infantry (Militia) Organized at Readville and mustered in for 100 days August 18, 1864. Duty at Camp Meigs, Readville. Mustered out November 26, 1864.


 * 23rd Regiment, Massachusetts Infantry Organized September 28, 1861.Mustered out June 25, 1865.
 * 24th Company Unattached, Massachusetts Infantry Organized at Plymouth and mustered in for one year's service December 16-22, 1864. Duty at Camp Meigs, Readville. Mustered out May 12, 1865.


 * 24th Regiment, Massachusetts Infantry Organized at Readville September to December, 1861. Mustered out January 20, 1866.


 * 25th Company Unattached, Massachusetts Infantry Organized at Salem and mustered in for one year's service December 9, 1864. Stationed at Fort Miller, Marblehead. Mustered out June 29, 1865.


 * 25th Regiment, Massachusetts Infantry Organized at Worcester September 1to October 31, 1861. March, 1864. Mustered out July 28, 1865.


 * 26th Company Unattached, Massachusetts Infantry Organized at New Bedford and mustered in for one year's service December 13, 1864. Duty at Camp Meigs, Readville. Mustered out May 12, 1865.


 * 26th Regiment, Massachusetts Infantry Organized at Camp Cameron, Cambridge, August 28, 1861. Moved to Boston, Mass., September 12-18, and there discharged from service.


 * 27th Company Unattached, Massachusetts Infantry Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
 * 27th Regiment, Massachusetts Infantry Organized at Springfield and mustered in September 20, 1861. Mustered out June 26, 1865. Old members mustered out September 27, 1864.


 * [[28th Regiment, Massachusetts Infantry Organized at Cambridge and Boston December 12, 1861. Mustered out June 29, 1865.


 * 29th Company Unattached, Massachusetts Heavy Artillery Organized September 20, 1864. Mustered out June 16, 1865.


 * Organized at Newport News, Va., December, 1861, from 1st Battalion Massachusetts Infantry (7 Cos.) and 3 new Companies ("F," "G" and "H") organized December 13-17, 1861, which joined Regiment at Newport News, Va., January 17, 1862. Mustered out July 29, 1865.


 * 30th Company Unattached, Massachusetts Heavy Artillery                                      Organized September 1, 1864. Mustered out June 16, 1865.


 * 30th Regiment, Massachusetts Infantry Organized September 1, 1864. Mustered out June 16, 1865. "Western Bay State Regiment," organized at Pittsfield, November 20, 1861, to February 20, 1862. Moved to Boston September 11-24, and discharged September 30, 1865.


 * 32nd Regiment, Massachusetts Infantry Organized as a Battalion of 6 Companies for garrison duty at Fort Warren, Boston Harbor, November 25, 1861. Mustered out June 29, and discharged July 11, 1865.


 * 33rd Regiment, Massachusetts Infantry Organized at Springfield August 6, 1862. Mustered out June 11 and discharged from service July 2, 1865.
 * 34th Regiment, Massachusetts Infantry Organized at Worcester August 1, 1862. Mustered out June 16, 1865.


 * 35th Regiment, Massachusetts Infantry Organized at Worcester August 1, 1862. Mustered out June 9, and discharged from service June 27, 1865.


 * [[37th Regiment, Massachusetts Infantry|37th Regiment, Massachusetts Infantry          Orgarnized at Pittsfield August 30, 1862. Mustered out June 30, 1865.
 * 38th Regiment, Massachusetts Infantry Organized and mustered in August 24, 1862. Mustered out June 30, 1865. Moved to Boston Mass., June 30-July 5. Discharged July 13, 1865.
 * 39th Regiment, Massachusetts Infantry Organized at Lynnfield August 13 to Septembr 2, 1862. Grand Review May 23. Mustered out June 1, 1865.
 * 40th Regiment, Massachusetts Infantry Organized at Lynnfield August, 1862.Mustered out June 16, and discharged at Reedville, Mass., June 30, 1865.
 * 40th Regiment, Massachusetts Militia Infantry Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
 * 42nd Regiment, Massachusetts Infantry                                                                       Organized at Camp Meigs, Reedville, November 11, 1862.  Mustered out August 20, 1863.
 * 42nd Regiment, Massachusetts Infantry (100 days, 1864) (Militia) Organized at Reedville for 100 days July 22, 1864 Mustered out November 11, 1864.
 * 43rd Regiment, Massachusetts Infantry (Militia) Organized at Camp Meigs, Readville, September 12 to October 23, 1862. . Mustered out July 30, 1863.
 * 44th Regiment, Massachusetts Infantry (Militia) Organized at Readville and mustered in September 12, 1862. Moved to Boston, Mass., June 6-10. Mustered out June 18, 1863.
 * 45th Regiment, Massachusetts Infantry (Militia) Organized at Camp Meigs, Readville, September 26-October 28, 1862. . Mustered out July 8, 1863.
 * 46th Regiment, Massachusetts Infantry (Militia) Organized at Springfield September 25-October 30, 1862. Moved to Boston July 15-17, thence to Springfield and there mustered out July 29, 1863.
 * 47th_Regiment,_Massachusetts_Infantry_(Militia) Organized at Boxford and Readville October 16, 1862. Moved to Boston, Mass, August 3-18, and mustered out September 1, 1863.


 * [[48th Regiment, Massachusetts Infantry (Militia) Organized at Wenham and mustered in October 29, 1862. Mustered out September 3, 1863.


 * 49th Regiment, Massachusetts Infantry (Militia) Organized at Pittsfield and mustered in October 28, 1862. Mustered out September 1, 1863.


 * 50th Regiment, Massachusetts Infantry (Militia) Organized at Boxford. Mustered out August 24, 1863.


 * 51st Regiment, Massachusetts Infantry (Militia) Organized at Worcester September 25 to October 30, 1862. Mustered out July 27, 1863.


 * 52nd Regiment, Massachusetts Infantry (Militia) Organized at Greenfield October, 1862. Moved to Massachusetts July 23-August 3. Mustered out August 14, 1863.


 * 53rd Regiment, Massachusetts Infantry (Militia) Organized at Groton Junction October 17 to November 6, 1862. Mustered out September 2, 1863. Losses,141.


 * 54th Regiment, Massachusetts Infantry (Colored) Organized at Readville and mustered in May 13, 1863. Mustered out at Mount Pleasant, S. C., August 20, 1865. Discharged at Boston, Mass., September 1, 1865.


 * 55th Regiment, Massachusetts Infantry (Colored) Organized at Readville and mustered in June 22, 1863. Mustered out August 29, 1865. Discharged at Boston, Mass., September 23, 1865.


 * 56th Regiment, Massachusetts Infantry Organized at Readville December 26, 1863, to February 24, 1864. Mustered out July 12, 1865.


 * 57th Regiment, Massachusetts Infantry Organized at Worcester and Reedville and mustered in April 6, 1864. Mustered out July 30, 1865.


 * 58th Regiment, Massachusetts Infantry Organized at Readville December 26, 1863, to February 24, 1864.Duty at Washington and Alexandria till July,.mustered out July 12, 1865.


 * 59th Regiment, Massachusetts Infantry Organized at Reedville December 3, 1863, to April 20, 1864. Consolidated with 57th Massachusetts Infantry May 26, 1865.


 * 60th Regiment, Massachusetts Infantry (Militia) Organized for 100 days August 1, 1864. Mustered out November 30, 1864.


 * 61st Regiment, Massachusetts Infantry Organized at Gallop's Island, Boston Harbor, August to October, 1864. Mustered out July 16. Moved to Reedville, Mass., July 20, 22, and discharged August 1, 1865.


 * 62nd Regiment, Massachusetts Infantry Organization commenced April, 1865, but not completed, mustered out May 5, 1865.


 * Boston Cadets, Massachusetts Infantry (Militia) Mustered in May 26, 1862. Stationed at Fort Warren, Boston Harbor. Mustered out July 2, 1862.


 * Cook's Company, Massachusetts Light Artillery Left State with 5th Massachusetts Volunteer Militia April 21, 1861, for Fortress Monroe, Va., arriving April 23; thence moved to Annapolis, Md., April 23-24. Quartered in Naval School Building till May 4. At Relay House May 6 to June 13. Mustered into United States service May 18, 1861, for three months. Duty at Camp Clare, near Baltimore, Md., and in Monument Square till August Mustered out August 2, 1861.


 * Salem Cadets, Massachusetts Infantry (Militia) Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * Staten's Company, Massachusetts Infantry (Militia) Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * Unassigned, Massachusetts "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.