The most important thing, though, is that grandpa didn’t have to go. He could have easily avoided the draft by going to stay with friends for a couple of days. Nobody would have found him, and soon he’d be forgotten in the mess that’s the Russian bureaucracy.
The overwhelming majority of the newly drafted are happy to go. There are thousands of videos of Russians dancing, singing and cheering at the drafting stations. These are people who never fought and are pretty much guaranteed to come home in body bags, if at all.
This is not a minor point. This is the most crucial moment of all in this. Why are these Russians so happy to go to war? Untrained, often armed with ancient, rusty weaponry and very likely doomed – why are they so eager? I know people who are more nervous to come back teaching in person than this.