107th Pennsylvania Infantry

At early dawn, agreeably to orders, I moved the One hundred and seventh Regiment by the flank to the field on the right. Here, forming column by divisions, we moved forward through a narrow strip of timber, gained the night previous, into a plowed field, in which, opposite side, Thompson's Pennsylvania battery had just gotten into position. 

Advancing half way across the field to within easy supporting distance of the battery, we halted for about five minutes, the enemy's shell and round shot flying about us like hail, killing and wounding some of our poor fellows, but not injuring the morale of the regiment in the least. Shortly we were again advancing and passing the battery, and over a clover field reached the spot so frequently mentioned in the reports of this battle - the corn-field. Deploying into line, we entered the field and pushed rapidly through to the other side. 

Here we found, in different positions, three full brigades of the enemy. We opened fire immediately upon those in front, and in fifteen minutes compelled them to fall back. Receiving re-enforcements, however, he soon regained his position, and an unequal conflict of nearly three-quarters of an hour resulted in forcing us back through the corn-field. Our brigade had, however, done its work. We had held at bay a force of the enemy numerically five times our superior for considerably more than an hour, and at one time driving them. We were now relieved by re-enforcements coming up, and retired to the rear. During the balance of the day we were constantly on the qui vive, but were not again called into action save to support batteries.

JAMES MacTHOMSON,

Captain, Commanding One hundred and seventh Regiment Pennsylvania Vols.,

Source: OFFICIAL RECORDS: Series 1, Vol 19, Part 1 (Antietam - Serial 27) , Pages 261 - 262