AI army that is forced to fight to death may trie to withdraw from a battle. The fight to the death icon showed up on the battle options screen on the campaign map. The battle starts the AI withdraws, and upon returning the whole army dissapears as should but the AI should not have that option available.
Did a custom battle to confirm and an all cavalry army can route units off the wall, minus 1 cannon to open the gates wich did not fire afterwards.
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