Yeah, easiest thing, just put UAV everywhere, all the time. scan when ur uav is down, and dont place atry where a bunch of teammates are lol. if theres a group of bad guys, say like 10, you might think, awesome 10 points for me if i drop arty on them, but if you have a bunch of teammates around there, let them take care of the threat.
drop arty at bases that the enemy is trying to take over as well. when the arty hits, a bunch of people could spawn and then get hit by your arty.
remeber, just right click on the squad screen, and thats where you can tell people to repair things, put mines down, and other useful things. you can also tell the squads to attack or defend a certain area, by right clicking on it, and press attack or defend.
also, if you right click the squad on the left, you can commend them, rebuke them, let the squad leader know of any uav, arty, or supplies are available and so on.
i bet i have repeated what most people have said, but i didnt take the time to read every post. hope this helps!