When either figure attacks the other, they both roll to fight. Regardless of the attacker, whoever "wins" that fight, has the option to either break away or push the other one off, which moves either figure up to 1 inch. Correct me if I'm wrong anyone else who reads this, but that is my understanding of it. If you have further questions on this game, reply to the Rules thread, Joe or somebody will likely respond with a detailed answer.
Thank you,
Like Clockwork