What battle proved war would be no picnic?

The Battle of Shiloh, fought in April 1862 during the American Civil War, proved that war would be no picnic. It was one of the bloodiest battles in U.S. history at the time, resulting in a staggering number of casualties—over 23,000 combined. The intensity and brutality of the fighting shocked both soldiers and civilians, dispelling any notions of a quick and easy conflict. This battle marked a turning point in the understanding of the grim realities of warfare.