50th New York Engineers in the American Civil War

Overview

The 50th New York Engineers (sometimes referred to as the Fiftieth New York Regiment of Engineers) served as an engineer regiment for the Union Army during the American Civil War. Organized in New York, this regiment was mustered into service beginning in September 1861 and served primarily in the Eastern Theater. The unit was notable for its extensive engineering work, including the construction of bridges, roads, and fortifications in support of the Army of the Potomac.

This regiment is distinct from the 50th New York Infantry (Three Months’ Service).

Organization & Service

The 50th New York Engineers was organized at various locations in New York State and mustered into Federal service at Elmira, New York, beginning in September 1861. The regiment was initially organized as infantry but was converted to engineers by Special Orders in October 1861. It was officially designated as an engineer regiment and attached to the Army of the Potomac, where it served throughout the war.

The regiment was assigned to the Engineer Brigade of the Army of the Potomac and participated in nearly all major campaigns of that army. Its duties included constructing pontoon bridges, roads, and field fortifications, as well as repairing railroads and other infrastructure. The 50th New York Engineers played a critical role in the Peninsula Campaign, Fredericksburg, Chancellorsville, Gettysburg, the Overland Campaign, Petersburg, and the Appomattox Campaign. The regiment mustered out of service in June 1865.

Engagements & Campaigns

• Peninsula Campaign (1862)
• Maryland Campaign (1862)
• Fredericksburg (1862)
• Chancellorsville Campaign (1863)
• Gettysburg Campaign (1863)
• Bristoe Campaign (1863)
• Mine Run Campaign (1863)
• Overland Campaign (1864)
• Siege of Petersburg (1864–1865)
• Appomattox Campaign (1865)

Casualties

According to Fox and Dyer, the 50th New York Engineers lost 1 officer and 24 enlisted men killed or mortally wounded, and 3 officers and 138 enlisted men died of disease, for a total of 166 deaths during its service. These figures are based on official reports and may vary slightly in other sources.

Field Officers & Commanders

• Colonel William H. Pettes
• Colonel William H. Pettes (resigned 1862)
• Colonel William H. Pettes (reappointed)
• Colonel Ira Spaulding
• Lieutenant Colonel Ira Spaulding
• Major Wesley Brainard

Regimental Roster

The complete roster of officers and enlisted men who served in the 50th New York Engineers is available on the regiment’s roster page. This roster includes names, ranks, and service details as recorded in official state and federal records.

To view the full roster, visit the 50th New York Engineers Regimental Roster page.

Sources & References

• Official Records of the Union and Confederate Armies, Series I, Volumes 11, 19, 21, 25, 27, 29, 36, 40, 46 (reports and correspondence relating to the Engineer Brigade and Army of the Potomac)
• Dyer, Frederick H. “A Compendium of the War of the Rebellion” (1908)
• Fox, William F. “Regimental Losses in the American Civil War” (1889)
• New York State Adjutant General’s Reports, Annual Reports for the Years 1861–1865
• Brainard, Wesley. “History of the Fiftieth Regiment of Engineers, New York Volunteers” (primary regimental history)