The Northern Alliance has enough troops to rotate and rest, but the bandit army does not. Even if someone is eyeing Central City, by the time they move to the outskirts of Central City and prepare for the attack, the Northern Alliance can simply drag them down just by stalling! Besides, the bandit army would never expect that the Suss Armored Group is just a cover, the sixth and seventh armored battalions of Blood Shadow are just covers, and even the thousand [Far East Victory] military mechas to the south and the two armored groups to the west are also covers. The real main offensive killers are those two seemingly weakest mixed regiments!
Within these two mixed regiments are concentrated nine Sharp Blade Companies of the Blood Shadow Armored Group! Otherwise, how could the bandit army so easily annihilate the 4th, 6th, and 7th Armored Battalions?
