Butterqwist wrote:That i know,

I meant if there can be several challenges during the duration of a combat. Ex: a combat phase end where one of the challengers have died but the loosing unit holds. Can then a new challenge be issued at the next close combat phase? The rulebook is a little vague on this point.
It sounds to me as if you're asking something like this.
Orcs, vs Elves. 2 character each
Combat starts and the orc challenges. Elf accepts..Kills the orc. Can the other orc declare a challenge?
No he cannot. Not until the following turn.
Challenges are done at the start of combat.
I.E. if for some freak reason you have 2 unbreakable units with 3 characters each. Once the initial challenge has been made and accepted. There will be no new challenges until one of the characters dies.
Like Nutty said, even if more units flank the combat the same challenge will stand.
Once one dies another challenge can be issued.