The entire anti-Saint Academy Alliance was on the move, and all the city-states were making preparations. This was the first large-scale military operation of the Alliance, and it was different from the battle between Zhao Hai and the Saint Academy. This time, they were on the defensive side, so the armies of the city-states were only on the defensive. They were moving in their own city, so they didn't have to worry about logistics or do much preparation.
However, it was different this time. The Alliance of the sacred Institute was going to take the initiative to attack. As the attacker, they had a lot to prepare. First of all, they were the attacker, so they had to prepare their food and supplies. Otherwise, they would run out of food before the battle even started. Then, the Army would collapse.