We played Antistasi, too. For every firefight that went well there were a dozen where our band of plucky insurgents rolled in to a NATO base full of tanks and died instantly. It's a fun game mode, though.

One of the biggest differences between games like ARMA or Squad compared to CoD or Battlefield is that you really, really, really have to knuckle down and cooperate with your team. If you go fucking off by yourself you're just going to die, probably to an AI or player 500m away that you never saw (I think it's hilarious that CoD gives you a "Long shot" bonus for shooting someone like 60m away when the average engagement in ARMA is 3-500m). Teamwork and coordination is how you get things done. You need a dozen pairs of eyes looking out for enemy forces, you need the tanks and the infantry leaders communicating to cover each other's weaknesses and provide supporting fire, you really, really want the guys doing artillery to be on the phone with everyone else bc artillery can delete an entire square kilometer and you don't want to be there when they do. Most groups will teach you some really basic radio procedures which seems silly until you actually get in a game with sixty people who all need to communicate and realize what a clusterfuck comms turns in to if people don't have rules to keep things orderly.