If the monitoring of the prisoners was left to Golems, Vandalieu could only foresee a future where the prisoners would take them by surprise, and the same would happen if he hastily made some Zombies to do the job. They were elite soldiers capable of defeating a Rank 3 monster on their own. Even if they were unarmed, they would likely be able to fight evenly against a Rank 2 monster, and if they cooperated, they might even be able to bring a Rank 3 monster down. With the martial skills of the Unarmed Fighting Techniques of this world, even a boulder could be easily smashed.

These were people who would be able to somehow defeat bears with their bare hands.