A quick question about the terrain placement rules.
The rules state that the only terrain which can be used must come from the defender's terrain list, except that it's possible to place dunes by seas and marshes by rivers, even if those terrain types aren't in the arny's terrain list.
Assuming I choose such a marsh, having also chosen a river, how does the placement process work? I assume I roll the normal two dice, but what happens if they specify the terrain piece has to go somewhere away from the river? Do I get to roll again, or is it just bad luck?
Cheers