The 16th Connecticut Volunteer Infantry Regiment lost 6 officers and 76 enlisted men killed or mortally wounded and 3 officers and 240 enlisted men to disease during the Civil War. It is honored by a monument at Antietam.

1862
August 24 Organized at Hartford under Colonel Francis Beach (USMA 1857), formerly captain in the 4th United States Artillery.
August 29-31 Moved to Washington, D.C. Attached to 2nd Brigade, 3rd Division, 9th Army Corps, Army of the Potomac
September-October Maryland Campaign
September 16-17
Battle of Antietam

With little training and no experience, the 16th Connecticut was placed on the flank of Burnside’s advance on Sharpsburg in the afternoon and were struck and crushed by A. P. Hill’s attack. Out of 779 engaged the regiment lost 43 killed, 161 wounded and 204 captured or missing.

From the War Department marker to Harland’s Brigade on the Antietam battlefield:

On the morning of the 17th, Harland’s Brigade moved from its position southeast of Burnside Bridge. The 11th Connecticut, deployed as skirmishers, preceded Crook’s Brigade in its assault on the bridge and was repulsed with great loss. During the forenoon the remaining Regiments of the Brigade moved down the left bank of the Antietam, crossed at Snavely’s Ford and, moving up the right bank of the stream, formed line on the left of the Division, Ewing’s Ohio Brigade in support. At about 3 P.M., the Brigade advanced in the direction of Sharpsburg. The 8th Connecticut passed to the west of this point and the 16th Connecticut and 4th Rhode Island were in the 40 acre cornfield east, when they were attacked in flank by the right of A.P. Hill’s Division and compelled to retire to the cover of the high ground near the bridge.

October 27 Duty in Pleasant Valley, Md.
October 27-
November 17
Movement to Falmouth, Va.
December 12-15
Battle of Fredericksburg
1863
January 20-24 Burnside’s 2nd Campaign, “Mud March”
February 6-9 Moved to Newport News
March 13 To Suffolk
April 12-May 4 Siege of Suffolk. Attached to 2nd Brigade, 2nd Division, 7th Army Corps, Dept. of Virginia
April 24 Edenton Road
May 3 Providence Church Road and Nansemond River
May 4 Siege of Suffolk raised
June 9-17 Reconnaissance to the Chickahominy
June 24-July 7 Dix’s Peninsula Campaign
July 1-7 Expedition from White House to South Anna River
July Moved to Portsmouth, Va. Duty there and at Norfolk assigned to 2nd Brigade, Getty’s Division, Portsmouth, Va., Dept. of Virginia and North Carolina.
1864
January Assigned to District of Albemarle, N. C., Dept. Virginia and North Carolina
January 20 Skirmish at Harrellsville (Detachment)
January 24-28 Moved to Morehead City, then to New Berne and Plymouth
January 30 Skirmish at Windsor
February 2 –
March 20
Duty at Newberne
April At Plymouth, N. C.
April 17-20 Siege of Plymouth, assigned to Defenses of Newberne, N. C, Dept. Virginia and North Carolina
April 20
Surrender of Plymouth

Outnumbered 5 to 1 and with no hope of escape or reinforcement, the garrison was surrendered and the regiment captured.

April 1864-
June 1865
Those not captured on duty at New Berne and Roanoke Island, N. C. asigned to Dept. North Carolina.
May 10 Colonel Beach was exchanged.
1865
June 24 Mustered out