With all the nobles dealt with, Lapitus had little trouble getting the more neutral soldiers to his side.
These men made up the bulk of the remaining forces and once they saw that everyone else they might have relied on was already taken care of, no one saw any point in resisting.
Besides, many did not want to resist in the first place, as they were quite in favor of taking Alexander's offer and only followed Petrino out of sheer fear.
So when it was revealed what Lapitus had done, many rejoiced, with only a staunch few being enraged.
But these men were then either killed or chose to swallow their anger and accept they had lost.
So with this new reality cemented, the men guarding the gates swiftly followed Lapitus's order asking them to open it, as they at last welcomed their new lord.