I noticed that new players learn to ally before they learn about the ally/silo bug. That's very wrong. And like that isn't enough, they try to enforce an ally game every time they see a 4 way strat (sometimes even in a 3 way strat).
Battlezone isn't silly Combat Commander (falsely called BZ2), where one is commanding (the one with strategic skills, but slow reflexes) and other is fighting (the one with DM skills, but no brains). In BZ you have to be skilled in both genres - FPS and RTS, and even in a team game it is basically every man for himself. The only thing teams share is supply and hangar, and unfortunately - the silo. Then there's an issue when only one side allies...
Remember, every game is FFA (free for all) if ALL players didn't agree otherwise BEFORE the game was launched. If the game already started no need to ask for a team game.
Team game in 1.4 is only for pro stratters who effectively do what I described in the first post. Both bugs (silo and one-side-ally) have been
fixed in 1.5, so if you are new and you wanna play team strat, learn to ally/unally right, or go play 1.5. But remember, it's still in a beta phase.