How does Crane describe the Union soldiers' retreat from the enemy?

This isn't exactly a retreat, but rather a panicked rush from battle. I will continue to look for a retreat in these chapters.

"The commander of the brigade was rushing around screaming. His horse often threatened the running men, but they escaped with unusual luck. In this rush they apparently could not hear or see. They paid no attention even to the largest and longest of the curses that were thrown at them from all directions.Frequently, over this wild scene could be heard the jokes of the experienced soldiers. But the running men apparently were not even aware of this attention."