Wiktionary
n. A mobile kitchen used to provision personnel on or near the site of a military operation.
Wikipedia
A field kitchen is a mobile kitchen, mobile canteens or food truck used primarily by military services to provide warm food to the troops near the frontline or in temporary encampments.
Usage examples of "field kitchen".
Thereupon she herself ran over to the field kitchen in her high-heeled shoes, and reached the steaming hot coffee exactly at the same time as a shell from a naval gun.
Finally, he looked away toward Hudro, still at the field kitchen, and shouted something in Hyadean.
I want a field kitchen outside the walls with a meal ready for all of them before dark.
The meal was served off the back of the field kitchen by the cooks.
This one was given over to a field kitchen and mess hall, crude and bleak.
When everyone was fed, he reluctantly sent the field kitchen on its way.
Refugee arrivals were already being moved into one part, where food was being dispensed from a field kitchen.