@Kitsune o.o *Quick sneaks off to try update list* Okay in all seriousness I aint done it but from memory the open positions are:
Squad 1: Lieutenant and lower
Squad 4: Lieutenant and lower
Squad 6: Lieutenant and lower
Squad 8: 3rd Seat and lower (Controlled by Killbox)
Squad 9: 3rd seat and lower (Controlled by Obli)
Squad 10: I don't think it's so open anymore...
Squad 11: 3rd seat and lower
Squad 12: Lieutenant and lower
Squad 13: Lieutenant and lower (Controlled by Abi)
You can always take control of a Squad by becoming it's Lieutenant and if it doesn't have a Captain...so there is that option...but choice is yours. That's the rough list though...I really need to put together a proper list...*rubs back of head* I'll start work on it now