(September 17, 1862.)
Caldwell's Brigade relieved Meagher's and became heavily engaged with the Confederate Infantry occupying the Sunken Road and Piper's cornfield south of it. After an obstinate contest, the Brigade succeeded in dislodging the Confederates from the Sunken Road and, having repelled several attempts to turn its flanks, advanced to the high ground overlooking Piper's house, where it was halted by command of General Richardson.