スポットシルバニア・コートハウスの戦い
Gregg and his brigade participated in the Eastern Campaigns of the spring of 1864, seeing action at the Battle of the Wilderness, the Battle of Spotsylvania Court House, the Battle of Cold Harbor, and the Siege of Petersburg. During the fighting in the Wilderness, Gregg was wounded on May 6, 1864, and then went with Lee's army to Petersburg until 1864.