For the most part, squads stick together and shoot.
BF2142 is a very fast paced game and thinking/arranging the use of manouevers can often lead to a loss of momentum. Manouevers take training, it is difficult to pull them off with a random group of pubbies. An effective squad generally stays close and uses the terrain to get an advantage on their enemies. Splitting the squad has its uses, but doing so when combating a full enemy squad is dangerous: once contact is established the enemy has the advantage since it is much easier for your squad lead to die (fewer bodies in front of him/her) in which case the squad cannot spawn and in most cases one or more squadmates will dive to revive the squad lead, further reducing the number of soldiers you have shooting at the enemy. If the squad lead stays back you are then seriously outnumbered -- you are already a man down and then are engaging in groups of 2 or 3. Thus, splitting the squad with the intent to 'surround' the enemy will usually end up with your squad dying -- to surround an enemy you need more soldiers than they do and when its squad on squad you don't.
A cross-fire is another thing all together and can be very effective, though rarely established by a single squad. Here contact is established and both squads take to cover, in a situation like this, sending a fireteam around to circumvent the enemy cover can be accomplished. The problem is that there are very few encounters that last long enough for this to occur and fewer areas in maps where the terrain allows for it to happen.
If you must have an assumption about your enemy, then make it this: My enemy is at least as skilled as myself, if not more so. Dropping an enemy soldier only takes a few seconds and most players are quite capable of dropping two in a direct firefight without cover with equal numbers. The
TG servers hold both experienced players and newcomers, the only tactic that works on both is ambush. Position yourself and your squad so that when you engage the enemy you are doing so from the side or from the rear, you will have much higher success. The first shots are also key, if you do not drop the first target immediately, the squad knows your position and retains the same number of soldiers as your own.
For the instance of Comm tower in Belgrade, the flanks are by far the most effective routes. East or West of the flag itself is the best bet -- it is natural for defenders to orient themselves in accordance with the enemy home base and watch that direction more closely and with more equipment (sentries IDS etc).
As far as actual movement, I find using a point-man to be a good practice. My version of point-man is that the squad lead sets orders and the point-man then leads the squad to the destination. In this scenario the Squad Lead is more of an officer than a soldier. Ideally the pointman is a friend of yours, a veteran of the game or a player that you trust. If you want to move along a certain path, use a move marker. This practice helps keep the squad lead alive since he's not the one to stumble onto enemy squads first/find those annoying APM's. As with battle manoevers, moving in formation is something that requires training and most players don't bother, but ideally the squad would move in a 'double chevron' pattern.
----------------------------- Point-Man----------------
----------------------------- /---------\----------------
--------------------------SM1---------SM2-------------
------------------------------SquadLead----------------
-----------------------------/-----------\---------------
--------------------------SM3-----------SM4------------
