5th New York Heavy Artillery Regiment

5th New York Heavy Artillery Regiment The 5th New York Heavy Artillery Regiment was a Union Army New York (state) regiment raised during the American Civil War and organized for garrison and siege service around New York City, Fort Hamilton, and the defenses of Washington, D.C.. Recruited chiefly from New York City, Kings County, Queens County, and surrounding Long Island, the regiment later served with the Army of the Potomac and in several major operations including the Overland Campaign and the defenses during the Siege of Petersburg.

Formation and Organization

Formed in July 1862 under state authorization from Governor Horatio Seymour and mustered into Federal service at Fort Hamilton and Albany under the supervision of the New York State Militia system, the regiment consolidated companies originally raised as heavy artillery batteries and militia companies drawn from Brooklyn, Bronx neighborhoods, Suffolk County, and Nassau County. The 5th was assigned to the defenses commanded by Maj. Gen. George B. McClellan-era and later overseen by Henry W. Halleck and garrison commanders at Fort Totten and Fort Schuyler. Organization of companies followed Federal mustering protocols and coordination with the United States War Department and New York State Adjutant General offices.

Service and Engagements

Initially deployed to the Defenses of Washington, D.C. and manning fortifications such as Fort Greene and Fort Hamilton, the regiment transitioned to field duty and was attached to the XIX Corps and later elements of the II Corps during the 1864 campaigns. Elements participated in the Wilderness Campaign, the Battle of Spotsylvania Court House, and the Battle of Cold Harbor as infantry in the autumn of the Overland Campaign after manpower demands required heavy artillery regiments to serve as infantry. Companies were engaged in the Siege of Petersburg operations, including trench warfare against forces under Gen. Robert E. Lee and engagements near Hatcher's Run and Five Forks, culminating in actions during the Appomattox Campaign and the final pursuit to Appomattox Court House where Confederate forces under General Robert E. Lee surrendered to Ulysses S. Grant. Throughout service the regiment interacted with units such as the 1st New York Heavy Artillery Regiment, 2nd New York Heavy Artillery Regiment, VI Corps, and elements of Army of the James during joint operations.

Commanders and Notable Personnel

Regimental leadership included Colonel Richard C. Duryea, Brigadier General Thomas W. Egan (who oversaw attached heavy artillery brigades during portions of 1864), and Lieutenant Colonel Homer A. Nelson, each of whom had prior service or later connections with New York militia institutions and Federal staff offices. Notable officers and men included James S. Motley (company officer later involved with postwar veterans' organizations), surgeons affiliated with the United States Army Medical Department, and noncommissioned officers who were active in Grand Army of the Republic posts after the war. The regiment’s command interacted with corps commanders such as Winfield Scott Hancock, Philip H. Sheridan, and staff officers from the Army of the Potomac.

Equipment and Armament

Raised as heavy artillery, the regiment was originally equipped for garrison duty with armaments common to coastal fortifications including smoothbore and rifled siege pieces under ordnance regulations of the Bonhomme Richard era modernization and issued small arms by the United States Ordnance Department. When converted to infantry roles during the 1864 campaigns, men were armed with pattern long arms such as Model 1861 Springfield rifle-musket and sometimes captured or issued Enfield rifled musket variants, with sidearms including Colt Army revolver and edged weapons following Federal supply through depots at Washington Navy Yard and Washington Arsenal. Siege service utilized heavy guns and mortars emplaced in forts like Fort Sumter-style batteries and ordnance supply lines tied to the Philadelphia Navy Yard and Watertown Arsenal systems.

Casualties and Strength

Originally mustered at regimental strength typical for heavy artillery formations, the 5th New York Heavy Artillery’s roster fluctuated due to detachments, reenlistments, sickness, and combat losses; total enrollment figures approached the high hundreds to over a thousand men across companies. In heavy combat during 1864–1865 the regiment suffered significant casualties from engagements at Spotsylvania Court House, Cold Harbor, and trench actions around Petersburg, with deaths from battle, disease, and wounds recorded in muster rolls maintained by the New York Adjutant General and consolidated in postwar veteran registers. Surviving veterans participated in reunions and filings with the United States Pension Bureau during Reconstruction.

Postwar Consolidation and Legacy

After mustering out in August 1865 the remnants of the regiment were discharged and many veterans joined Grand Army of the Republic posts, engaged with New York historical commemorations, and contributed artifacts and records to museums including collections associated with the New-York Historical Society and the New York State Military Museum. The regiment’s service influenced New York militia reorganizations and veterans’ political networks during the Gilded Age, and its battle honors and muster rolls remain referenced in histories of the Army of the Potomac, regimental compendia by writers like Frederick Phisterer, and archival collections in the New York State Archives and private regimental associations. Category:Units and formations of the Union Army from New York