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Gettysburg, Antietam, Fort Sumter, Vicksburg
battle of antietam (NEW RESPONDENT) That was the bloodiest 1-day battle. Gettysburg was the bloodiest alogether.
Gettysburg was the turning point in the American Civil War. Lee made numerous mistakes that cost him the battle.
The two key battles that assured the Union victory in the Civil War were Vicksburg and Gettysburg.
In the East - 2nd Bull Run, Antietam, Chancellorsville, Gettysburg,. In the West - Shiloh, Vicksburg, Chattanooga, Atlanta.
Gettysburg, Vicksburg, the Battle of Chattenooga, and the Battle of Pettersburg. You could argue that that the battle of Antietam was also a key victory as it gave Abraham Lincoln the grounds to issue his preliminary emancipation proclamation, but Antietam was not a stunning victory for the North.
Antietam and Gettysburg
Vicksburg, Gettysburg
Gettysburg and Vicksburg
1st Bull Run, Manassas (aka 2nd Bull Run), Antietam, Vicksburg, Gettysburg, Chickamauga, Atlanta, the March across Georgia, Nashville.
Gettysburg Vicksburg Chattanooga
Vicksburg and Gettysburg.