Four Sky Cities entered the battlefield, marking the end of the battle—it had to end.
While the Alliance Army's patrol cruisers might have been relatively intact, and the Armored Ship Troops still capable of fighting, once the Sky Cities entered the battlefield, the Imperial Army's troops could retreat into the city. At that point, any attack would become meaningless unless they could destroy the Sky Cities outright, but with the current military strength of the Alliance Army, that clearly wasn't feasible.
Therefore, after this, both sides' troops separately withdrew, with the Alliance Army's troops lined up in front of their own three Sky Cities, and the Imperial Army's troops retreating back into the city. Then, the four Sky Cities withdrew from the battlefield.
With the Imperial Army's four Sky Cities completely withdrawn from the battlefield, it signified the Alliance Army's victory in this battle!
