24 Guardhouse Behavior Do not let your guard down, even if you are not confronting the enemy.

In a guardhouse, it is warned that you should not talk in loud voices, drink booze, sing, have prostitutes, or gamble.

—Yoshimori Hyakushu #65

The shinobi scrolls are filled with details about how to bypass a target’s security personnel. To a shinobi in the field, no defensive impediment is quite as pressing—or as complicated—as an enemy’s guards. While the scrolls instruct shinobi to work in blind spots that guards cannot monitor or protect easily, the most exploitable gaps stem not from poor military strategy or lack of manpower but from guards’ negligence and lack of discipline.

The scrolls advise seeking out guards who are observably tired, ...

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