OK So Duinhir allows rerolls on failed wound rolls.

So if I need a 6 and then a 5 to wound a troll for example, do I get to reroll both dice?

I will try to give an example---- 10 archers, 6 hits and I roll one 6 to wound, now I can reroll the other 5 misses, from those I get 1 more 6. Now I roll the sixes to get the 4, I get one 4 and reroll the other die correct. I know might used on carries over to the second die so I can only assume this works this way also?

Thanks for replies.