This one feels like a healthy mix of a Battlefield title and an Arma title. Tactical squad based, decently sized battles. It went free for a bit so if you missed it or were unable, here's your chance!

Lean to the left,
lean to the right,
come on y'all let's stop this fight!

Cause it's the friendly dance,
and as you can see,
I'm having fun, so come join me!