Zook was killed, but Brooke made a splendid charge, turning Kershaw's right and driving Semmes back through the supporting batteries.

Sweitzer's brigade then came up a second time to aid Brooke, but it was useless, for there was still another line of batteries beyond, and as the Peach Orchard by this time was in possession of the enemy, Brooke's advanced position was really a disadvantage, for both his flanks were turned.

Semmes' brigade, together with parts of Benning's and Anderson's brigades, rallied behind a stone wall, again came forward, and succeeded in retaking the knoll and the batteries they had lost.

Caldwell, under cover of our artillery, extricated his division with heavy loss, for both Zook's and Kelly's brigades were completely surrounded.
Then Ayres,* who had been at the turning-point of so many battles, went in with his fine division of regulars, commanded by Day and Burbank, officers of courage and long experience in warfare.

He struck the enemy in flank who were pursuing Caldwell, and who would have renewed the attack on Little Round Top, doubled them up, and drove them back to the position Caldwell had left; but his line, from the nature of things, was untenable, for a whole brigade with ample supports had formed on his right rear, so that nothing remained but to face about and fight his way home again.