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Muster In: Organized under authority of the War Department at Camp Scott, Staten Island, N Y., as 3rd Regiment, Sickles’ Brigade. Left State for Washington, D. C., July 24, 1861.1
Muster Out: Eight Companies mustered out June 20, 1864 (Cos. “A,” “B,” “D,” “E,” “F,” “I” and “K”). Companies “C,” “G” and “H” attached to 120th Regiment, New York Infantry. Company “C” mustered out July 20. Company “G” July 2 and Company “H” October 31, 1864. Veterans and Recruits transferred to 120th Regiment New York Infantry.2

Commander(s):
Lieutenant Colonel John Leonard
Commander Image

Commander 2
Commander Image

Commander 3
Commander Image

First Offensive Order of Battle: Fourth Brigade | Third Division | II Corps | Army of the Potomac | Union Army3

Second Offensive Order of Battle:

Fourth Brigade | Third Division | II Corps | Army of the Potomac | Union Army (June 19-20, 1864)5

Eight companies mustered out June 20, 1864, the other three companies transferred and attached to 120th NY June 20, 18646

  • Commander: Lieutenant Colonel John Leonard (June 24-25, 1864)7
  • Unit Strength:
  • Weapons:
  • Note: Eight Companies mustered out June 20, 1864 (Cos. “A,” “B,” “D,” “E,” “F,” “I” and “K”). Companies “C,” “G” and “H” attached to 120th Regiment, New York Infantry. Company “C” mustered out July 20. Company “G” July 2 and Company “H” October 31, 1864. Veterans and Recruits transferred to 120th Regiment New York Infantry. It appears the eight companies whose time had expired were led home by Lieutenant Colonel John Leonard on or about June 25, 1864.8,9

Third Offensive Order of Battle:

  • Was no longer an independent command.10

Fourth Offensive Order of Battle:

  • Was no longer an independent command.11

Fifth Offensive Order of Battle:

  • Was no longer an independent command.12

Sixth Offensive Order of Battle:

  • Was no longer an independent command.13

Seventh Offensive Order of Battle:

  • Was no longer an independent command.14

Eighth Offensive Order of Battle:

  • Was no longer an independent command.15

Ninth Offensive Order of Battle:

  • Was no longer an independent command.16

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles17:

  • Before Petersburg June 16-18.
  • Eight Companies mustered out June 20, 1864 (Cos. “A,” “B,” “D,” “E,” “F,” “I” and “K”).
  • Companies “C,” “G” and “H” attached to 120th Regiment, New York Infantry.
  • Company “C” mustered out July 20.
  • Company “G” July 2.
  • Company “H” October 31, 1864.
  • Veterans and Recruits transferred to 120th Regiment New York Infantry.

Bibliography:

    Siege of Petersburg Documents Which Mention This Unit:

    Sources:

    1. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    2. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    3. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 1 (Serial Number 80), p. 222
    4. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 72nd New York Entry, Page 117; Summary Statements of Quarterly Returns of Ordnance and Ordnance Stores on Hand in Regular and Volunteer Army Organizations, 1862-1867, 1870-1876. (National Archives Microfilm Publication M1281, Roll 7); Records of the Office of the Chief of Ordnance, 1797-1969, Record Group 156; National Archives Building, Washington, D.C.
    5. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    6. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    7. “General Grant’s Army.” The Philadelphia Inquirer (Philadelphia, PA), June 25, 1864, p. 1, col. 1” The Third Excelsior Regiment, Lieutenant-Colonel LEONARD Commanding, will leave here, to-morrow (June 25, 1864), for home, their term of service having expired.  This regiment participated in all the battles of the Peninsula, under General MCCLELLAN, and with the exception of Antietam, all those in which the Army of the Potomac have been engaged.”
    8. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    9. “General Grant’s Army.” The Philadelphia Inquirer (Philadelphia, PA), June 25, 1864, p. 1, col. 1” The Third Excelsior Regiment, Lieutenant-Colonel LEONARD Commanding, will leave here, to-morrow (June 25, 1864), for home, their term of service having expired.  This regiment participated in all the battles of the Peninsula, under General MCCLELLAN, and with the exception of Antietam, all those in which the Army of the Potomac have been engaged.”
    10. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    11. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    12. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    13. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    14. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    15. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    16. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    17. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)

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