Cannon The Samurai never really developed the art of cannon making. Most of the cannons used during this era were taken from visiting European ships. The cannons were mostly used as siege weapon. Note the cannon is strapped on its movable base. Flags The flags worn on the backs of the Samurai colorfully represented their clan or family and helped identify friend or foe. The fans inside a circle are from the Tokugawa Clan. The 10 dots around in the circle represents the Hosakawa clan.