Firing volleys vs. 'at will'

[Barbarian]

crossbomen have to stand with gap, just the same way as behind infantry, also, this tactic is useful if you have some cavalry too, to quickly aid them if anything goes wrong, cause if enemy cavalry ever reach this formation, loses will be heavy.
About muskets standing behind the hill: In the first versions of medieval2 they could shoot at anything behind the hills, just like archers or crossbowmen, but I think I that it was fixed with one of the patches, so now they shouldn't be able to do that.

[Alpedar]

I didn't meant behind hill. I mean on top of "hill" and melee troops infront of them little lower. I hope that this way straight flying bullet can fly just above heads of protecting units when enemy is far (once they are realy close, this will not hold)

[Barbarian]

Oh, clear. Yes, the units which are lower than musketeers won't be harmed, just I am never sure how much lower exactly must they be. But even one of the historical battles in Medieval2 starts with pikemen lines, and musketeers behind them, on a higher ground.

I just would like to know clearly, if mounted musketeers can shoot over the lines of infantry. I guess, they can.