Gennulman - please don't confuse the field kitchens - that mainly provide the troops with hot pea soup (old eastern european tradition) with a field bakery, that makes hot bread, as the name indicates. A field bakery mainly needs trucks to haul bags of flour, tankers with water, and it also has specialized trucks to make the dough (looking like shop vans from the outside) and at last mobile ovens (probably also looking like shop vans - but they sure would need a smokestack!). So the field kitchen doesn't really help you much here. Good luck digging for the resources, knowing the Russians it's still top secret today. And good luck with the build, have a nice day
Paweł