in the main rule book it says that halberds use both hands, but temple gaurd have a halberd AND a shield :O i don't understand, do u have to choose? or are temple gaurd so powerful that they can hold it in one hand?
Yeah you choose which to go with when you reach combat, and once you choose you must stick with that choice for the duration of the combat but if you disengage and start another combat, you can choose again. Basically, the halberd will give you higher strength, but if you use a shield it is combined with a hand weapon so you get a much better armour save. Really depends on the situation as to which is better.
And remember that even if you always use halberds in close combat, you will still get the extra armor save from the shield versus ranged attacks while you advance.