Companies G. I. and K., 4th U.S. Infantry.
Lieut. C.H. Carlton, Commanding.
September 17, 1862.
Between 3 and 4 p.m., of the 17th, the 4th U.S. Infantry took position on the right (north) of the Boonsboro Pike, near the Bloddy Lane.
Companies G. I. and K. under command of Lieut. Carlton, were advanced as skirmishers, their left resting on the pike at this point. The right extending northwardly across open ground in the direction of Piper's Lane.
In this position they engaged the Confederate skirmishers at a rail fence, 75 yards distant from the center of the line.
The center was enfiladed by canister from the enemy's guns on Cemetery Hill, south of this road, and suffered severely.
About sunset the skirmishers were withdrawn and rejoined the regiment which then recrossed the Antietam.