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27th Massachusetts Infantry

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Muster In: Organized at Springfield and mustered in September 20, 1861.1
Muster Out: Mustered out June 26, 1865.2

Commander(s):
Captain Adin W. Caswell
Commander Image

Captain Peter S. Bailey
PeterSBailey27thMA3

Lieutenant William McKay
Commander Image

Commander 4
Commander Image

First Offensive Order of Battle: First Brigade | Second Division | XVIII Corps | Army of the James | Union Army4,5

Second Offensive Order of Battle: First Brigade | Second Division | XVIII Corps | Army of the James | Union Army7,8

Third Offensive Order of Battle: First Brigade | Second Division | XVIII Corps | Army of the James | Union11,12

  • Commander: Captain Adin W. Caswell (July 31, 1864)13
  • Unit Strength:
  • Weapons:

Fourth Offensive Order of Battle: First Brigade | Second Division | XVIII Corps | Army of the James | Union Army14

  • Commander: Captain Peter S. Bailey (August 31, 1864)15
  • Unit Strength:
  • Weapons:

Fifth Offensive Order of Battle: First Brigade | Second Division | XVIII Corps | Army of the James | Union Army (September 1-17, 1864) (source needed)

  • Commander:
  • Unit Strength:
  • Weapons: Enfield Rifles (.577 caliber) (September 30, 1864)16
  • Note: Moved to Carolina City, N. C., September 17-21, and duty there until November 28.17

Sixth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.18

Seventh Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.19

Eighth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.20

Ninth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.21

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles22:

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. Peter S. Bailey image.  MOLLUS-Mass Civil War Photograph Collection, Vol. 131, Page 6721.  United States Army Heritage and Education Center, Carlisle, PA.
    4. 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. 236
    5. 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. 555
    6. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 27th Massachusetts Entry, Page 86; 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. 236
    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. 555
    9. 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. 555
    10. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 27th Massachusetts Entry, Page 86; 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.
    11. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 1 (Serial Number 80), page 266
    12. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 3 (Serial Number 82), page 740
    13. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 3 (Serial Number 82), page 740
    14. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 2 (Serial Number 88), page 621: “Organization of the Army of the Potomac…August 31, 1864”
    15. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 2 (Serial Number 88), page 621: “Organization of the Army of the Potomac…August 31, 1864”
    16. Volume 15 (Ordnance Returns for the Third Quarter, July-September, 1864); 27th Massachusetts Entry, Page 80; 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.
    17. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    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. Letter from the 23d Mass. Reg’t.” Cape Ann Light and Gloucester Telegraph. August 13, 1864, p. 2 col. 4-5
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