Emancipation Proclamation By hchao Period: Jan 1, 1862 to Dec 31, 1865 Emancipation Proclamation Apr 26, 1862 Congress passes law allowing African Americans to serve Union Army Sep 13, 1862 Battle of Antietam-Stepping stone for the emancipation Turning point for the North Sep 22, 1862 Lincoln issues the Emancipation Proclamation Jan 1, 1863 Lincoln signs the Emancipation Proclamation Jul 18, 1863 54th Massachusetts attacks Confederates and win respect for African American troops Apr 26, 1864 Republicans in Congress prepare a constitutional ammendment to abolish slavery Apr 26, 1865 Confederate Congress passes law to enlist enslaved people Dec 6, 1865 Thirtheenth Amendment ratified; frees all slaves