Massachusetts 21st Regiment

Massachusetts 21st Regiment
Unit name	21st Regiment, Massachusetts Volunteer Infantry
Country	United States
Allegiance	Union
Branch	Infantry
Dates	1861–1865
Notable commanders	Edward Wild, John F. Parker

Massachusetts 21st Regiment The 21st Regiment, Massachusetts Volunteer Infantry was an Infantry regiment raised in Massachusetts for service in the American Civil War that served in multiple theaters including operations with the Army of the Potomac, the Department of North Carolina, and the XIX Corps. The unit enlisted in the summer of 1861 during the mobilization following the Attack on Fort Sumter and participated in major campaigns that involved commanders such as Benjamin Butler and George B. McClellan. The regiment's service intersected with battles like Roanoke Island, Antietam, Cold Harbor, and the Siege of Petersburg, shaping its reputation in Massachusetts politics and veteran commemorations after the war.

Formation and Early History

Recruitment for the regiment began in Springfield, Massachusetts and surrounding counties amid calls from Governor John Albion Andrew and the Massachusetts Adjutant General to furnish troops for the Union cause; companies formed in towns including Worcester, Massachusetts, Lowell, Massachusetts, Salem, Massachusetts, New Bedford, Massachusetts, and Plymouth County, Massachusetts. Initial training occurred at state encampments influenced by prewar militia traditions like those of the Massachusetts Volunteer Militia and reflected tactics current in manuals by Winfield Scott and doctrines used by brigades in the Department of the Gulf. Early attachments placed the regiment under departmental command structures associated with Fort Monroe operations and amphibious expeditions organized by Benjamin Butler and naval officers from the United States Navy such as those serving under Samuel F. Du Pont.

Organization and Commanders

The regiment mustered with ten companies, each raised under local captains drawn from civic leaders and veterans of the Mexican–American War era militias; field officers included colonels, lieutenant colonels, and majors appointed by state authority and confirmed by the Massachusetts Governor's Council. Notable commanders included Edward Wild, whose prior experience intersected with Harvard University alumni networks and abolitionist circles, and John F. Parker, who coordinated actions with brigade chiefs like John G. Foster and division commanders under Ambrose Burnside. The unit's staff worked with regimental adjutants and quartermasters liaising with the United States War Department logistics lines and with surgeon officers trained in hospitals modeled after Massachusetts General Hospital and the U.S. Sanitary Commission field hospitals.

Service in the American Civil War

The regiment's operations were conducted across coastal North Carolina, the mid-Atlantic, and Virginia theaters while attached at times to forces commanded by George B. McClellan, Ambrose Burnside, and Benjamin Butler. Early wartime service saw participation in amphibious landings coordinated with the United States Navy, including operations led by Rear Admiral Louis M. Goldsborough and Samuel F. Du Pont. The regiment later joined campaigns tied to the Army of the Potomac and corps-level maneuvers during the Maryland Campaign, the Overland Campaign, and the prolonged Siege of Petersburg, engaging in combined operations that referenced tactics from officers like Ulysses S. Grant and Winfield Scott Hancock.

Major Engagements and Campaigns

The regiment fought at battles and expeditions including the Battle of Roanoke Island, where coastal operations involved coordination with Benjamin Butler and naval forces under Stephen C. Rowan; the regiment also saw action in the Battle of New Bern and the Siege of Suffolk. During the Maryland Campaign elements were engaged in actions connected to Antietam and skirmishes around Harper's Ferry and Sharpsburg. In Virginia the regiment took part in the Overland Campaign with engagements near Cold Harbor and later endured trench warfare during the Siege of Petersburg, which culminated in operations associated with the Appomattox Campaign and the surrender witnessed in Appomattox Court House. The unit's roles spanned assault, picket, and entrenchment tasks alongside formations such as the XIX Corps and divisions under commanders like Nathaniel P. Banks.

Casualties and Strength Changes

Throughout service the regiment experienced attrition from battle casualties at actions such as Roanoke Island, Antietam, and Cold Harbor as well as losses from disease common in camps and hospitals treated by the U.S. Sanitary Commission and regimental surgeons. Muster rolls reflected enlistment waves, reenlistment bounties administered under Congress of the United States legislation, and consolidations with other Massachusetts companies after heavy losses; strength fluctuations were recorded in returns submitted to the Adjutant General of Massachusetts and in casualty lists compiled by newspapers such as the Boston Daily Advertiser. Officers killed, wounded, captured, or resigned included names appearing in postwar rosters and in memorials maintained by Massachusetts historical societies.

Post-war Service and Legacy

After mustering out, veterans joined Grand Army of the Republic posts and participated in memorialization through monuments at battlefields like Petersburg National Battlefield and Antietam National Battlefield, as well as in reunions in Boston, Massachusetts and at state ceremonies presided over by governors and civic leaders. Regimental histories and memoirs appeared in publications circulated by the Massachusetts Historical Society and in veterans' writings preserved in archives such as the Library of Congress and the Massachusetts Archives. The regiment's lineage influenced later Massachusetts militia organizations and is commemorated in scholarly works on the American Civil War by historians affiliated with institutions like Harvard University and Brown University.

Category:Units and formations of the Union Army from Massachusetts