What is the Confederate attack on the union called today?

The Battle of Shiloh

Explanation:

not 100% sure but on April 6, Confederate forces attacked Union forces under General Ulysses S. Grant at Shiloh, Tennessee. By the end of the day, the federal troops were almost defeated. Yet, during the night, reinforcements arrived, and by the next morning the Union commanded the field.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;