I did 35 years both Army and Air Force. The AF had the better chow (no surprise, right!). But I still remember the meals cooked over heat tabs in canteen cups with my squad mates being the best.

But in the spirit of the thread: Best field rats ever were the 24 hour ones we got training with the Brits.

Pershing 1A. No city too big, no populated area too small. We even get the roaches.