Most everyone that I know prefers to be called whatever your particular service branch calls you.
If I am in the army call me a soldier, because that is what I am.
Why would you be insulted to be called a WarFighter since you were in the Army for over 20 years knowing what the Army's goal is? ...Which is "To deter war and when deterrence fails to have a combat ready force that is physically and psychologically prepared to fight and win global war." ...Hense WarFighter.
I was in the army for over 20 years and it is insulting for you to call me a warfighter.
Well, Love, sorry you are insulted. I work in a Joint Service Command, and that's what they call them, Warfighters, covers ALL branches of Service.
P.S. Thank you for your service and sacrifices.