Meanwhile, the Confederacy was collapsing. On April 3, Richmond, Virginia, the Confederate capital, fell to the Union Army. On April 9, General Robert E. Lee and his Army of Northern Virginia surrendered to General Ulysses S. Grant and his Army of the Potomac after the Battle of Appomattox Court House. Confederate President Jefferson Davis and other Confederate officials had fled. Nevertheless, Booth continued to believe in the Confederate cause and sought a way to salvage it; he soon decided to assassinate Lincoln.