That’s a big IF for the military being willing. They are a huge chunk of the budget and that would be a PR nightmare and jeopardize their generally positive public perception

When the military starts killing its own citizens it also galvanizes the population. It’s going to cause massive unrest even if they “win.”

The military won’t last long if they kill their entire workforce. At best they can have a stalemate, where “they” win, but no longer have anyone to build their weapons and ammo anymore.

The apathy is also almost certainly seeded by bad faith actors.

It’s not “society’s children” they’re refusing to support, it’s their shitty employer under capitalism. If we lived in a utopian society, you’d have a point. It’s not the employee’s role to sacrifice for some other person the employer is accommodating at your expense.