Bloodiest Battles of The Civil War By abrahamlicolnkelly1 Period: Apr 6, 1862 to Apr 7, 1862 Battle of Shiloh Period: Aug 28, 1862 to Aug 30, 1862 Second Bull Run Period: Sep 16, 1862 to Sep 18, 1862 Anietnam Period: Dec 31, 1862 to Jan 2, 1863 Battle of Stones River Period: Apr 30, 1863 to May 6, 1863 Chancellorsville https://www.battlefields.org/learn/civil-war/battles/chancellorsville Period: May 18, 1863 to Jul 4, 1863 Vicksburg Period: Jul 1, 1863 to Jul 3, 1863 Battle of Gettysburg https://www.battlefields.org/learn/civil-war/battles/gettysburg Period: Sep 18, 1863 to Sep 20, 1863 Battle of Chickamauga https://www.battlefields.org/learn/civil-war/battles/chickamauga Period: May 4, 1864 to May 21, 1864 Spotsylvania https://www.battlefields.org/learn/civil-war/battles/spotsylvania-court-house Period: May 5, 1864 to May 7, 1864 Battle of Wilderness https://www.battlefields.org/learn/civil-war/battles/wilderness