At 3.30 o'clock p. m. [September 14, 1862], by order of General Hooker, the battery was placed upon a high hill to the right of the turnpike and near the base of the mountain. Immediately on coming into battery, 25 or 30 caseshot were thrown among the enemy on the slope of the mountain, scattering them, but, eliciting no reply from the enemy's guns, I ceased firing, by General Hooker's order, that the infantry might advance. The position of our lines prevented any further firing during the evening no order to change position being received.
No casualties attended the engagement.
J. H. COOPER,
Captain Pennsylvania Artillery, Commanding Battery B.
Source: OFFICIAL RECORDS: Series 1, Vol 19, Part 1 (Antietam - Serial 27) , Page 271