May 21 Organized at Hartford under Colonel Levi Woodhouse
June 10 Left State for Washington, D.C.
June Attached to Abercrombie’s 6th Brigade, 2nd Division, Dept. of Pennsylvania for duty at Chambersburg, Pa., and at Hagerstown, Md.
July 4 At Williamsport
August 16 At Frederick; attached to 2nd Brigade, Banks’ Division, Army of the Potomac
AugustĀ 31 Colonel Woodhouse resigned. Lieutenant Colonel Robert O. Tyler was promoted to colonel.
September 5 Moved to Darnestown, then to Fort Richardson, Defenses of Washington
January Designation of regiment changed to 1st Connecticut Heavy Artillery January 2, 1862.