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12th Massachusetts Infantry

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Muster In: Organized at Fort Warren and mustered in June 26, 1861.1
Muster Out: July 8, 1864.2

Commander(s):
Commander 1
Commander Image

Commander 2
Commander Image

Commander 3
Commander Image

First Offensive Order of Battle: Second Brigade | Third Division | V Corps | Army of the Potomac | Union Army3,4

Second Offensive Order of Battle:

Second Brigade | Third Division | V Corps | Army of the Potomac | Union Army (June 19-24, 1864)7,8

Mustered out (June 24 or 25, 1864)9,10

Third Offensive Order of Battle:

  • No longer in existence.18

Fourth Offensive Order of Battle:

  • No longer in existence.19

Fifth Offensive Order of Battle:

  • No longer in existence.20

Sixth Offensive Order of Battle:

  • No longer in existence.21

Seventh Offensive Order of Battle:

  • No longer in existence.22

Eighth Offensive Order of Battle:

  • No longer in existence.23

Ninth Offensive Order of Battle:

  • No longer in existence.24

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles25:

  • Before Petersburg June 16-18.
  • Ordered home for muster out June 25.
  • Mustered out July 8, 1864.

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. 224 ↩
  4. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 2 (Serial Number 81), p. 546 ↩
  5. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 12th Massachusetts Entry, Page 83; 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. ↩
  6. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 12th Massachusetts Entry, Page 83; 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. ↩
  7. 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. 224 ↩
  8. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 2 (Serial Number 81), p. 546 ↩
  9. 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. 224 ↩
  10. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 2 (Serial Number 81), p. 546 ↩
  11. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 12th Massachusetts Entry, Page 83; 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. ↩
  12. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 12th Massachusetts Entry, Page 83; 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. ↩
  13. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3): Dyer’s Compendium states that the regiment was ordered home on June 25. ↩
  14. 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. 224: The Official Records use June 24 as the order home date. ↩
  15. Cook, Benjamin F. History of the Twelfth Massachusetts Volunteers (Webster Regiment). (Twelfth (Webster Regiment) Association: 1882), p. 139: The only regimental history of the unit indicates they marched for home on the afternoon of June 25, 1864. ↩
  16. “Army Correspondence.” Stoughton (MA) Sentinel. July 2, 1864, p. ? col. ?: “The glorious 12th Regiment go home next Saturday.”  This statement was written on June 22, 1864, making “next Saturday” June 25, 184.  It seems more and more likely the regiment left on June 25, 1864. ↩
  17. Vautier, John D. History of the 88th Pennsylvania Volunteers in the War for the Union, 1861-1865. Philadelphia: Printed by J.B. Lippincott, 1894, p. 196: “On June 25 the 12th Massachusetts left for home, time having expired.” ↩
  18. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
  19. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
  20. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
  21. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
  22. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
  23. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
  24. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
  25. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩

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