Many reservists are public about what they do. I have my military affiliation in all my profiles. He's not in some kind of secret special forces unit or anything like that.

Ultimately, being a reserve officer is a matter of public record, as you are formally gazetted and there is no point trying to pretend it is secret.

Why would it be a poor idea? Unless he is actively a part of clandestine operations and units there is nothing materially damaging about this. No more than, say, folks like Chris Kyle, Dan Crenshaw, or Jocko Willink revealing they were SEALs.

Where I work there is a big move to replace people's last names with only their initial.

Except their LinkedIn URL still displays their name. It was a good attempt, at least.

Not the only amateur thing...

> "The identities of the Twitter accounts which the 77th Brigade uses for engagement and communication remain unclear, however: the unit’s acknowledged account has been locked since it was hacked earlier this year, with the result that only approved followers can see its tweets."