Finally got FF Tactics, and the first thing I discovered is that Black Mages (Wizards) are somewhat less crappy than their predecessors.

The second thing I've discovered is that I can't work out how to make my Archers shoot over objects. Enemy archers can do it (and regularly give me a hard time by doing so) but I can't. Can someone explain this please?

I'm guessing it has something to do with what type of weapon I have; my Archer is currently equipped with a crossbow, but are there longbows that shoot in arcs? I know that'd make sense but I've not been playing the game long enough to be sure.