I just showed it to her. You’re right! She is, I think, too young for the language here. She does not recommend anyone Ukranian. She thinks you should get someone who emigrated after WWI, since this is the period he would have served. It says he was to be discharged in 1926, but not that it was done.
The place at which the record was issued was Arkhangelskiy Region. The military colonel who signed the enlistment did so at Kamyshinskiy area surrounding (suburbs) of the town of Kamyshin.