Er, right... anyway.
NapalmEnima and Ludio hit the nail on the head. I don't expect IS guys to be capable of taking a base by themselves, even if you were to get more IS guys in the base than other people. (Hell, coordinating that many IS guys would be a nightmare.) If you unload even half a clip into an IS guy with an assault rifle they should fall over, and a SINGLE headshot should be enough to bring one down (since they don't have a helmet.) But a dedicated squad of IS guys should be capable of causing sufficient havoc within a base to soften it up for an assault (even at the price of their lives) or scope out the base and provide good recon for the main assault force. And since I enjoy causing wanton chaos so much, I've found my calling in life (as it were.)
Oh, Napalm, Ludio... if you like doing this sort of thing as much as I do...
http://planetside-universe.com/forum...&threadid=1652
Just an idea.