Troops relief question

How do the troops in Iraq get to relieve themselves on the road from Kuait to Baghdad? Do they stop at regular intervals or if someone has to go, do they jump out, go and run back to their vechicle? How does that work for thousands of troops?

A convoy starts and stops as it meanders and makes it’s way. You jump out and go on the side of the road (as a male, anyway) and hope the convoy doesn’t get moving too fast. They MAY take a rest every two hours or so, but if not, something always breaks down.

I just saw something about this in this article: