I played a game the other week and I took cannons and mortars. Anyway, one time when I wanted to shoot my cannon my opponent said that I can't place the cannonball in such a way that it will go through combat.
I thought the rule was I can't place the first point ontop of any unit in combat. If it bounces, then it goes wherever.
In this situation I was aiming for his corpse cart but his units close by where in combat.
Another question regarding the above but with the mortar. If I place the large blast on the corpse cart but part of the blast is on top of a unit in combat can I still do that? I figured it was you can't place the center on anything in combat.