General Gregg was unaware of the gap in front of his lines. As Meade's soldiers surged up the hill, Gregg rode along his line ordering his troops to hold their fire, afraid that they faced retreating Confederates. As an obvious target in a general's uniform on horseback, Gregg suffered when a Union bullet penetrated his side and lodged near the spine. "Stonewall" Jackson and A.P. Hill visited him as he lay dying in the Yerby House. He died just before sunrise on December 15.