of Maj. Gen. David B. Birney and Brig. Gens. Francis C. Barlow, John Gibbon, and Robert O. Tyler. V Corps, under Maj. Gen. Gouverneur K. Warren, including the divisions of Brig. Gens. Charles Griffin, Samuel W. Crawford, and Lysander Cutler. VI Corps, under Brig. Gen. Horatio G. Wright, including the divisions of Brig. Gens. David A. Russell, Thomas H. Neill, and James B. Ricketts. IX Corps, under Maj. Gen. Ambrose Burnside, including the divisions of Maj. Gen. Thomas L. Crittenden and Brig. Gens.Robert B. Potter, Orlando B. Willcox, and Edward Ferrero. Cavalry Corps, under Maj. Gen. Philip H. Sheridan, including the divisions of Brig. Gens. Alfred T.A. Torbert, David McM. Gregg, and James H. Wilson. (During the period of May 9–24, Sheridan's Cavalry Corps was absent on detached duty and took no part in the operations around Spotsylvania Court House or the North Anna River.) Confederate Lee's Confederate Army of Northern Virginia comprised about 53,000 men and was organized into four corps: First Corps, under Maj. Gen. Richard H. Anderson, including the divisions of Maj. Gens. Charles W. Field and George E. Pickett, and Brig. Gen. Joseph B. Kershaw. (Three of Pickett's four brigades returned to the Army of Northern Virginia May 21–23 from duty at the James River.) Second Corps, under Lt. Gen. Richard S. Ewell, including the divisions of Maj. Gens. Jubal A. Early and Robert E. Rodes. (Jubal Early was temporary commander of the Third Corps until May 21; during this assignment, his Second Corps division was commanded by Maj. Gen. John B. Gordon. Gordon then was given command of two brigades that had earlier been in the division of Maj. Gen. Edward "Allegheny" Johnson, who was captured by Union troops at Spotsylvania Court House on May 12.) Third Corps, under Lt. Gen. A.P. Hill, including the divisions of Maj. Gens. Henry Heth, John C. Breckinridge, and Cadmus M. Wilcox, and Brig. Gen. William Mahone. (Hill returned from sick leave on May 21. Breckinridge's Division joined the army on May 22 from duty in the Shenandoah Valley.) Cavalry Corps, without a commander following the mortal wounding of Maj. Gen. J.E.B. Stuart on May 11, including the divisions of Maj. Gens. Wade Hampton, Fitzhugh Lee, and W.H.F. "Rooney" Lee. (Hampton became the commander of the Cavalry Corps on August 11, 1864.) For the first time in the campaign, Lee received sizable reinforcements, including three of the four brigades