4th Connecticut Infantry Regiment

May 21, 1861

Organized at Hartford

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 Potomac

September 5

Moved to Darnestown, then to Fort Richardson, Defenses of Washington

January, 1862

Designation of regiment changed to 1st Connecticut Heavy Artillery January 2, 1862.