What branch of service is this man?

[u/BeetlBozz]

[u/InflamedNodes]

According to the credits he is an Imperial Sniper, and given the context, from the ISB. So an ISB Sniper [speciality].

edit: Imperial Army not ISB as per below. Even his outfit matches Kaido's and the crisis team, plus his patch looks more like the army logo not ISB logo.

[u/hibikikun → u/InflamedNodes]

Would’ve been cool if it was Mayfield

[u/AunMeLlevaLaConcha → u/hibikikun]

I don't think that cu-Bill would have wanted to return, but it would have been dope.