How did Juneteenth begin? On June 19, 1865, about two months after the Confederate general Robert E. Lee surrendered at Appomattox, Va., Gordon Granger, a Union general, arrived in Galveston, Texas, to inform enslaved African Americans of their freedom and that the Civil War had ended. General Granger’s announcement put into effect the Emancipation Proclamation, which had been issued more than two and a half years earlier, on Jan. 1, 1863, by President Abraham Lincoln.