A global chat badge for verified military service. It could be a simple badge one for everyone or expanded for nations or nation/branch. ie: MilVet/Army/Marine/UK:Marine/US:Army/Aus:Navy, ect... lots of ways to potentially expand.
First responder (dr/nurse/emt/fire/LE) also possible.
If you became a member of the armed or rescue services for special attention and perks instead of the warm fuzzy feeling that comes from saving lives and helping others, then you honestly don't belong in that field to begin with and you should re-evaluate your life choices.
You shouldn't get clout just for being a military person... Literally nobody cares and if they do they shouldn't.
What sense does it make for the chat to know that you are a first responder for example? really none.
Also, what happens if a firefighter, for example, throws dirty words around, there are not only good firefighters, then it directly throws a bad light on the whole fire departments.