Do you mean which campaign was the turning-point of the American Civil War?
It was the failure of Lee's invasion of Pennsylvania, ending at Gettysburg - on the same day that Grant took the surrender of Vicksburg on the Mississippi.
After that, the North was bound to win - subject to Lincoln winning the Presidential Election of November 1864.
The true turning point of the Civil War was the seizure of Vicksburg, but it was really the result of a siege.
Most historians and scholars believe the turning point of the American Civil War was the Battle of Gettysburg fought in July 1863.
The Battle of Gettysburg.
Vicksburg
The Civil War was a turning point in the history of the United States. Before the Civil War, the country was divided in its attitudes, exemplified by saying "the United States are;" after the war, people said, "the United States is," showing a unity that had not previously existed.
because it was the turning point in the war
Gettysburg
battle of Gettysburg
the battle of bull run
Probably the Civil War or Revolutionary War.
The true turning point of the Civil War was the seizure of Vicksburg, but it was really the result of a siege.
Most historians and scholars believe the turning point of the American Civil War was the Battle of Gettysburg fought in July 1863.
Vicksburg
Gettysburg
The Battle of Gettysburg.
Vicksburg
The turning point was not a battle but a siege, the Siege of Vicksburg.