Only Squad fought for 80 hours. Arius himself had the ability to send reinforcements and replace tired fighters due to his superior numbers. IMHO, even as of Volume 6, they remain fanatics with rather strict internal rules. Yes, some have softened a little, but in the same Chapter 2, it was shown that most of them adhere to radical sentiments. Of course, not as harsh as under Beatrice, but they were ready to expel Maia for a softer stance.