During one game session, 72 battles were played. You can see the statistics in the screenshot. It is worth noting an interesting fact: the battle maps appeared in a strictly cyclical order, and the end of each cycle was accompanied by a new map. That is, the battle maps appeared in the following order (approximately, since I don't remember from which battle the cycle started):
1} 2 1 2} 3 1 2 3} 4 1 2 3 4} 5 1 2 3 4 5} 6 1 2 3 4 5 6} 7, etc.
I marked the end of the cycle with a curly bracket.
I would also like to note that in this game session, the morale bonus never appeared for the Gargoyles, although it did appear in other sessions.
And here, a new session started with a map that never appeared in the old one!
2VDV_forever: Battle map #11 in this game session appeared only after 71 attempts! So, what about the repetition? :p
Edit: The last line should be read as: 16 07, bottom, 27-19. The rest is correct.
I can't resist adding: I just found a session where the battle maps do not repeat, i.e., each time a NEW one appears! Testing continues :)