July-3, 1863. The final day of this huge and pivotal battle.
After observing that Union lines were essentially intact Lee changed his plan.
He would attack the center of the left side of the hook.
First he let loose, what is regarded as the biggest employment of artillery in the war, on the said center.
The above was followed by a charge of 12,000+ Confederates, which though gallant failed because of heavy fire from the flanks and the Union artillery was still intact.
Jeb Stuart's cavalry was blunted by that of the Union which included an impulsive commander CUSTER.
After three days 57,000 casualties.