Answer :

Ulysses Grant's goal at Vicksburg was to directly take over the city. The Battle at Vicksburg occurred on May 19th, 1863.

General Ulysses S. Grant Attempted to Take Vicksburg, Mississippi 
May 19, 1863 
Vicksburg, Mississippi, was an important, well-protected fortress for the Confederate Army during the Civil War. On May 19, 1863, Union General Ulysses S. Grant attacked Vicksburg--a direct assault with intent to take over the city. The Union navy had already prevented other regiments from joining Confederate General C. Pemberton at Vicksburg, but the Southern city held strong that day.