the rules for Iron Will Counters state that, "When one or more flags are rolled against a Prussian unit, that otherwise can’t be ignored, the Prussian player may spend an Iron Will counter. Each counter spent will allow one flag to be ignored.
But, the base game rules for bounce flags state that, "A bounce flag rolled against a cavalry unit by an infantry unit in square may not be ignored for any reason."
What do you think about:
-Bounce flags can´t be ignored by Prussian Cavalry iron will token.
-A Prussian Square can ignore flag/s thanks to Iron will counters.