Cyberjutsu

19 Call Signs When you steal in, the first thing you should do is mark the route, showing allies the exit and how to escape.

After you have slipped into the enemy’s area successfully, give more attention to not accidentally fighting yourselves than to the enemy.

—Yoshimori Hyakushu #26

While shinobi are often portrayed in popular culture as lone actors, many shinobi worked in teams. These teams were particularly adept at discretely relaying information to each other in the field. The Gunpo Jiyoshu manual describes three call signs, or physical markers, that the shinobi developed to communicate with each other without arousing suspicion. Based on what the markers were and where they were placed, call signs helped shinobi identify a target, ...