I have only lost the chief slot to one single challenge because they caught me recalling hurt badly and I retook it in a couple minutes killing both of the orcs so many times that one went inactive and one deleted. I took him with a horde the first fight, while two orcs fought me (I was using a warbaner made from my corpse and items I bought in the village with a couple others)

One was mamlauk and one was mundu
Daurwyn is completely right, I fought plenty of orcs and beat their asses; i admit I always carried wrath and well.....if you can't find an orc banner then you have no place playing an orc, heh. Banners are ridiculous in any fight.