The fan manual states:
a mixed army has "Bravery" but no "Morale." It attacks or flees according to the usual rules, but does not join the hero (unless "Bravery" is specifically configured to do so).
With ALWAYS_FIGHT, it doesn't look very good that no one will flee, which would be annoying when attacking remaining weak squads.
In this image, the creatures' bravery is "can join or flee," and their morale is "friendly."
