The Appomattox Campaign was a series of battles in April 1865 during the American Civil War, primarily involving the forces of Union General Ulysses S. Grant and Confederate General Robert E. Lee. This campaign aimed to cut off Lee's retreat and force his surrender, marking a crucial turning point in the war. The campaign culminated in the surrender of Lee's Army of Northern Virginia at Appomattox Court House on April 9, 1865. This event effectively signaled the end of the Civil War, as it led to the collapse of the Confederate resistance and set the stage for the reunification of the United States.