Do you use your mic?
As in right now in BF3? No. I mean I have joined a 'party' once or twice but most of the clans/servers run mumble or something and use that. I don't know about BF4, I haven't read that far yet, but it sound like it would be coming back to the BF2 model, which would be epic!
Yeah... do you have to talk in military-speak? At least from that video, it seems like teams... and the coordination looks like it would be challenging.
Even BF3 has teams. 2 sides to the conflict and both sides have squads of 4 or less people per squad. You can interact with your squad and you get more points for doing things for/with your squad than you do for helping the rest of your team, so it promotes teamwork but it is still hard to find a squad that works really well together.
The coordination can be hard unless everyone is on a VOIP setup like mumble, then it's good. It was much better in BF2 with the commander approach and the communication hierarchy (squad can talk in game to squad leaders and squad leaders can communicate with their squad and the commander). It seems like they might be bringing that back in BF4.