On March 26, 1865, Major General George Crook was appointed commander of the 2d Cavalry Division of the Army of the Potomac to replace Gregg. Davies's brigade was heavily engaged in cavalry operations, including those during the Battle of Dinwiddie Court House on March 31, 1865, that contributed to the Union breakthrough at Petersburg and the evacuation of Petersburg and Richmond by the Confederates on the night of April 2, 1865. The brigade also was engaged in the Appomattox campaign, including its role as the main Union force in the Battle of Amelia Springs, Virginia in which the brigade, near Paineville, Virginia, destroyed about 200 wagons of a Confederate supply train, captured equipment and animals and took more than 300 and perhaps as many as 1,000 prisoners and several battle flags. The campaign ended with the surrender of the Confederate Army of Northern Virginia at Appomattox Court House on April 9, 1865.