Soldiers Eating Trash ???

Here is a DARPA scheme to feed our military forces using trash and other materials found where they are deployed:

https://www.stripes.com/theaters/us/2021-12-15/darpa-cornucopia-air-water-microbe-foods-military-deployments-3978766.html

What kind of battlefield are they considering ... an apocalyptic one?

Here's a better idea - bring our soldiers, sailors, and airmen home and employ them making useful things here in the USA. Then this logistical problem will go away. They're not going to defeat China and Russia anyway.