United States Regiments & Batteries
Massachusetts provided to the Union Army 5 regiments and 3 battalions of cavalry; 4 regiments, 1 battalion and 30 independent companies of heavy artillery; 18 batteries of light artillery; 2 companies of sharpshooters; and 71 regiments and 3 battalions of infantry. Most served in the eastern theater, with exceptions listed below.*
Massachusetts Infantry Regiments
1st • 2nd • 3rd • 4th • 5th • 6th • 7th • 8th • 9th • 10th
11th • 12th • 13th • 14th • 15th • 16th • 17th • 18th • 19th
20th • 21st • 22nd • 23rd • 24th • 25th • 26th •28th • 29th
30th • 32nd • 33rd • 34th • 35th • 36th •37th • 38th • 39th
40th • 46th • 51st • 56th • 57th • 58th • 59th • 60th • 61st
The 27th, 31st, 41st, 42nd, 43rd, 44th, 45th, 47th, 48th , 49th, 50th, 52nd, 53rd, 54th, and 55th infantry regiments did not serve in the Eastern Theater. The 62nd Infantry never completed its organizaton, which was underway at war’s end.
Massachusetts Infantry Battalions
1st Infantry Battalion • 3rd Rifle Battalion
Massachusetts Sharpshooter Companies
1st Sharpshooters Company • 2nd Sharpshooters Company
Massachusetts Cavalry
1st Cavalry • 2nd Cavalry • 3rd Cavalry • 4th Cavalry • 5th Cavalry (Colored)
Devin’s Mounted Rifle Battalion
The Independent Cavalry Battalion and the 2nd Cavalry Battalion did not serve in the Eastern Theater.
Massachusetts Heavy Artillery
Unattached Heavy Artillery Companies
1st Heavy Artillery • 3rd Heavy Artillery • 4th Heavy Artillery
The 1st Battalion Heavy Artillery, 2nd Regiment Heavy Artillery and several independent companies of heavy artillery did not serve in the Eastern Theater.
Massachusetts Light Artillery
1st Battery • 2nd Battery • 3rd Battery • 5th Battery • 7th Battery • 8th Battery
9th Battery • 10th Battery • 11th Battery • 14th Battery • 16th Battery • Cook’s Battery
The 4th, 6th, 12th, 13th and 15th Light Artillery Batteries did not serve in the Eastern Theater.