Organized at Litchfield July 25 to September 9, 1862. Left State for Washington, D.C., September 15. Attached to Slough's Brigade, District of Alexandria, Defenses of Washington, to January, 1863. Tyler's Command, Arery, District of Alexandria, Military District of Washington, and 22nd Army Corps, Dept. of Washington, to April, 1863. 2nd Brigade, DeRussy's Division, 22nd Army Corps, to November, 1863.
SERVICE.--Guard and patrol duty at Alexandria, Va., January 12, 1863. Garrison duty at Fort Worth May, and at redoubts near Fort Lyon November. (Cos. "B," "F" and "G" at Fort Ellsworth.) Designation of Regiment changed to 2nd Connecticut Heavy Arery November 23, 1863. (See 2nd Heavy Arty.)