Hello. i'm a U.S. guy, pretty chill. played loads of dayZ, arma 2, and some time in arma 3 (not many hours, only 250-ish.)
I was apart of a Platoon (a group of guys i know, no real "official" server, mind you.)
my role was usually Logistical XO. (SSgt., or E-6) and i was in charge of coordinating supply drops, armor and indirect fire deployments, and occasionally moving to a Squad leader position when needed.
I have some basic knowledge of arma 3 combat, though i'm much more familiar with arma 2. (the differences are minor, though i simply love the advanced leaning system!)
I can fill most any role sufficiently well, though i don't really like "lone wolfing". experience has taught me short of long range engagements it's usually suicide and gets a lot of other people killed too.