-if a guy's not catching a revive on a shock, drop something on his corpse to drag him out and try again
-resupply is available from light mobility type vehicles, including apc's, and rally points, not to include isurgent spawn cars
-you can resupply a field dressing
-you can reload shock paddles (supplies)
-2 clips will knock down an enemy rp (which are denoted by spotting a boat, as commonly accepted)
-slams are not effective vs tanks, especially those with full hp
-static tanks can be eliminated easily by placing a mine at either end and c4 on the other (my favorite armor destroying technique)
-engineer and h-at are on par with sniper when solo if played correctly. engineer is underused.
-you can drop up to 8 mines. any more will despawn
-arty is available more often than you may be used to. call it like it's the end of days.
-supplies and apcs, along with home bases, enable h-at and aa kit request.
-m-16 is most effective at medium range on single shot in two-three round burst, and in close on burst if aimed in lower-mid torso. beyond medium range there's a damn good chance the enemy is at an advantage. g3 > all currently, in terms of pure stopping power and longer range accuracy (excluding mm and sniper, or rifleman scoped kits.)
-you may spawn on any friendly rally so long as your sq lead has placed his own.
-crewman helmet is obscure, and makes falling in with enemies to knfe easier.
-you can zoom with tank/apc turret using default x.
-tall grass is not cover at long range
-if you really need to scale the impossible, try proning and side crawling upwards. slow, but effective in places.
-people instinctively prone in cq. aim for the floor and strafe.
-as a courtesy, don't camp spawns. destroy, only engaging if needed.

please correct or enlighten if you like