[potato3732842]

A week is gonna be mostly "here's how to function in our organization, this is our trade specific vocabulary, here's a rifle and how you use it"

You use your D-grade troops like that for behind the lines security. You use them to check papers at checkpoints, round up dissidents, keep people from taking pot shots at your supply lines, etc, etc, the kind of stuff you don't need expensive professional infantry[1] or even beat cops[2] for.

[1] Who's expensive infantry skills are unessary overkill

[2] Who can play checkpoint thug at the right level, but who have a bunch of needless expensive training put into them regarding laws, evidince, how to conduct a traffic stop, etc, etc, that is unnecessary.

[sigwinch]

I think you’re discounting what a physically-unacceptable soldier can do with a drone.

[fn-mote]

That D rating isn’t for physically unacceptable. It’s for complete incompetence or at least just punching the time clock. A lifetime of working for a bureaucracy that doesn’t care for you isn’t going to bring out the best anywhere else, either. Especially not if that’s a one week a year mandatory service. (I didn’t read tfa.)