The ukrainian military also have checkpoints in the west border to make sure any male between 18 and 60 doesn’t leave the country so that they can be forced into war.
In the west, you should expect to find the border guard. They are capable of checking databases, but aren't heavily armed. And tens of thousands of guys have taken leave on their own, despite anything the border guard can do. If one doesn't like the draft, one hikes out via the Carpathian mountains.
As for the draft, yes, it's a real thing. When a war on this scale gets started, states will draft soldiers into their armies. Many will dodge it. Since hundreds of thousands of soldiers are needed, lots of mistakes will be made, and will be sorted out later (units don't actually want soldiers who aren't capable of fighting).
Ultimately, who was called up but absolutely doesn't want to fight, must choose among these roles:
- emigree
- medical personnel
- defense industry
- underground dodger
- jailed dodger
Obviously, everyone is not competent to become a medic. The remaining positions are attainable. So, in the end, it's mostly people willing to fight at least somewhat, who end up fighting. Some of them get disillusioned and desert, however. That's normal too, in a large war that lasts long.
I'm not a military person, but I cooperate with military people, supplying drones and stuff that helps bring hostile drones down, so inevitably I do know the approximate situation.
A technical note: they need to sort their communication out earlier, by the midterm congressional election. Apparently, their communication didn't reach the voters, and voters were in a mood for hearing sweet lies from a criminal oligarch. They need to think of how to change that...
US society needs to somehow withstand 2 years of Trump running loose.
One can also hope that some senators or representatives are old enough to retire (or courageous enough to defect), changing the composition of the Congress before that. That might prevent or slow Trump from steamrolling new laws into force, until something has been figured out.