"Late in the evening of March 1, I went with my wife and child to Uzhgorod, on the border with Slovakia. In my naiveté, I also went along because I thought I was not fit for military service. On the temporary certificate that was issued to me as a replacement for my military ID card, it said "unfit in peacetime, limited fitness for military service." When I inquired, I immediately received a summons to the draft board. I was told to call a cab and drive to the enlistment office in the middle of the night. Although I had done nothing illegal - I had neither offered a bribe nor tried to cross the border secretly, I had simply asked - I knew from the way they spoke to me that I would never get out of there."

Excerpt from this (translated with deepl.com). The whole thing is worth a read.