During the 1863 Gettysburg Campaign, Doles's Brigade, 1,300 strong, formed part of Robert E. Rodes's Division. On July 1, 1863, Doles attacked the line of the Union XI Corps in fields near Rock Creek north of Gettysburg, driving their adversaries back over a mile. Pressure from Doles, as well as from fellow Georgian John B. Gordon and other brigades, eventually forced much of the XI Corps to collapse and retire to Cemetery Hill. The brigade suffered 219 casualties at Gettysburg—46 killed, 106 wounded, and 67 captured—a loss of 16.6% of its strength. Doles's men did not see any significant action on the second or third day of the battle, nor in the subsequent Bristoe or Mine Run Campaigns.