About to do my first Orc Warlord Orc Crisis Contract, first campaign at Iron Man that managed to reach so far. Hope my bros are good enough to deal with that.
Not sure how many orc warriors you've fought before, but:
Be careful of your back line, orc warriors will double push to get to vulnerable targets.
Bring hammers if you can. 2h swords and maces are also good.
Duelist with hammer or mace can break even orc warlords through HP damage.
Bring extra shields on tanks if you can and bring high durability shields. Warlords never come with shields and have an axe w/ axe mastery 75% of the time, so they can tear through your shield bros easily if they don't have a backup.
My best strategy has been to focus down the warlord rather than trying to tank him like you might other dangerous targets (bandits, unholds, etc.). He's not that tough compared to a warrior; a few good hits from a 2h or an armor ignore duelist will have him wounded and soon dead so you can break the morale of the rest of the camp at your leisure. edit- Oh, and bringing 2h'ers with swift hands... nothing better than luring an orc warrior into a charge that leaves him surrounded by 5 bros, all of whom can swap to a 2h hammer or mace...