The 30th Massachusetts Infantry Regiment lost 4 officers and 57 enlisted men killed and mortally wounded and 2 officers and 341 enlisted men to disease during the Civil War.

1861
December 31 Organized as “Eastern Bay State Regiment” at Camp Chase, Lowell, by Gen. Benjamin F. Butler
1862
January 2 Moved to Boston
January 4 Mustered into United States service
January 13 – 16 Sailed from Boston on steamer Constitution for Fortress Monroe, Va.
February 6 – 12 Sailed for Ship Island, Miss. and duty there. Attached to 3rd Brigade, Dept. of the Gulf
March 9 Company K Joined
April 15-28 Operations against Forts St. Phillip and Jackson, Mississippi River
April 28 Occupation of Fort St. Phillip
April 29-30 Moved to New Orleans
May 1 Occupation of New Orleans
May 9-10 Expedition to New Orleans & Jackson Railroad
May 30-31 Moved to Baton Rouge
June 7-9 Expedition from Baton Rouge
June 18-July 23 Williams’ Expedition to Vicksburg, Miss., and operations in that vicinity
June 22 Ellis Cliff
June 24 Hamilton Plantation, near Grand Gulf
July 23-26 Moved to Baton Rouge and duty there
August 5 Battle of Baton Rouge
August 21-22 Moved to Carrollton and duty there
October Defenses of New Orleans, and Garrison duty there.
1863
January 13-14 Moved to Baton Rouge. Attached to 3rd Brigade, 1st Division, 19th Army Corps, Dept. of the Gulf
March 7-27 Expedition to Port Hudson
May 12-24 Operations against Port Hudson
May 18-19 Monett’s Plantation and on Bayou Sara Road
May 24 Plain’s Store
May 24-July 9. Siege of Port Hudson
May 27 & June 14 Assaults on Port Hudson
July 9 Surrender of Port Hudson
July 12-13 Cox’s Plantation, Donaldsonville
August 1 –
September 2
Camp at Baton Rouge
August 1st Brigade, 1st Division, 19th Army Corps, Dept. of the Gulf
September 4-11 Sabine Pass Expedition
September 16 Moved from Algiers to Brashear City
September 26 To Berwick and to Camp Bisland
October 3 –
November 30
Western Louisiana (“Teche”) Campaign. At New Iberia
1864
January 7 At Franklin
February 18-
May 3
Veterans on leave
May 3-16 Moved to New Orleans
June 13 To Morganza
July 2-13 Moved to New Orleans, then to Fortress Monroe, Va., and Washington, D.C. Attached to the Army of the Shenandoah, Middle Military Division
July 14-23 Snicker’s Gap Expedition
August – December Sheridan’s Shenandoah Valley Campaign
September 19
Third Battle of Winchester (Opequan)
September 22
Fisher’s Hill
September 23-24 Mount Jackson
October 19
Battle of Cedar Creek
October Duty at Winchester, Kernstown and Stephenson’s Depot
1865
March Attached to 1st Brigade, 1st Provisional Division, Army of the Shenandoah
April 21-22 Moved to Washington, D.C. and attached to Dept. of Washington
May 23-24 Grand Review
June 2-6 Moved to Savannah, Ga., and attached to Dept. of the South
June 13 To Georgetown, S.C.
June 27 To Florence
July 9 To Sumpter and duty in 3rd Sub-District Eastern South Carolina
December 1 Mustered out