The Macro View
The Congressional-Military-Industrial Complex is alive and flourishing. This applies not just to the USA but to nearly every other republican democracy.
If your nation is an autocracy or oligarchy or mercantilist combination of the two, you don’t need to feed your draftees well. You don’t need to provide them housing comparable to the standards outside the military. You may or may not offer them health care during their time of service (perhaps only enough to keep them working for the time of their enlistment). You may not even need to train them