What was the 2 day battle that was the goriest battle in the US history during the civil war?

The Battle of Gettysburg, fought from July 1 to July 3, 1863, is often considered the goriest battle in U.S. history during the Civil War. It resulted in significant casualties, with about 51,000 soldiers killed, wounded, or missing. The battle marked a turning point in the war, as Union forces successfully repelled the Confederate army, ultimately leading to a decline in Southern morale and momentum. The high human cost and the scale of the conflict made it one of the most brutal confrontations in American history.