In the Iliad, it depicts armies putting forth a champion to fight and determine the battle without mass fighting. Did this ever really happen, and how often were the results honoured?

by wagyusmit
Dinocrocodile

Not to discourage any further answers, but you should definitely read this recent answer by /u/Iphikrates:

Is there any historical evidence that Ancient Greek states would resolve a dispute or war with champions fighting one on one? If they did then was this a common occurrence and were the results typically honored?.