Erasmus Armory

The Erasmus Armory is the shipboard cache of European weapons that transforms Yabu’s prospects from the moment he discovers its scale. It offers not merely valuable cargo but the material basis for a military innovation: a trained musket unit and a specialist artillery force. Yet its importance lies equally in the secrecy surrounding it. Yabu means to move the weapons to Mishima, conceal the transfer, and decide later whose cause—or whose victory—they will serve.

Discovery and Inventory

Yabu’s first response to the armory is exhilaration. He orders everything taken ashore the following day and specifies that the muskets be repacked in their crates, with nets or sacking used to camouflage the cargo. The order makes clear that the cache is not to be treated as ordinary spoils: its movement must be hidden from people who might otherwise recognize its strategic value.

The numbers explain his excitement. The cache contains five hundred muskets, with more gunpowder and shot than Toranaga possesses across the Eight Provinces. It also includes twenty cannon, five thousand cannonballs, abundant ammunition, and crates of fire arrows. Yabu judges the European arms to be of the best quality. The scale and variety of the stores distinguish the armory from a small shipment of imported curiosities; together, they could equip a substantial force and sustain its use.

Yabu has the cargo opened in the Erasmus’s main hold. Present are Igurashi, his chief retainer; Zukimoto, his quartermaster; ten villagers who open the crates under Mura’s supervision; and four samurai from Yabu’s personal guard. Their amazement does not match Yabu’s private excitement. He recognizes that the others do not understand either the weapons’ potential or why the discovery must remain secret, and he welcomes that gap in understanding.

Concealment and Transfer

Yabu assigns Mura to provide porters and makes Igurashi responsible for getting the entire armament, including the cannon, to Yabu’s castle at Mishima. The transfer is to take place in secret, and Igurashi is specifically instructed to travel by night and maintain strict security. These measures turn the armory into a logistical operation: heavy weapons and large quantities of ammunition must be removed from the ship, carried inland, and hidden before their value becomes common knowledge.

Secrecy is enforced by threat as well as procedure. Yabu warns Mura that the village will be obliterated if the information escapes. The threat exposes the human cost attached to the cache’s concealment: the villagers who handle the crates are not simply helpers but potential witnesses placed under the pressure of Yabu’s authority. The weapons’ movement therefore extends his power beyond the ship, into the village and the chain of retainers responsible for carrying out his order.

Military Theory and Political Choice

The armory gives material form to an idea Yabu has held for years. He envisions five hundred chosen samurai, armed with muskets and trained together as a unit, leading twelve thousand conventional troops. Twenty cannon would support them, operated in a special way by men trained as a unit themselves. In his conception, the weapons are not valuable merely because they are European; their decisive use depends on disciplined organization. The armory is the means by which he might put that theory into practice in the coming war.

That plan challenges the martial values that have shaped Japanese warfare in the account. Muskets and gunpowder had been introduced by the Portuguese in 1542, and Japanese manufacture began within eighteen months, but guns had long been treated as a novelty and used mainly for hunting. Bows were considered more accurate, while warfare remained organized around ritualized individual combat and the sword’s greater honor. The use of guns was regarded as cowardly and incompatible with Bushido, the code binding samurai to honorable conduct, loyalty to a feudal lord, and fearlessness in death. Yabu’s repeated inward question about Bushido, answered only by silence from his ancestors, registers the conflict without resolving it: the old code remains present, but it offers him no practical answer to a new military possibility.

The cache also leaves Yabu’s allegiance unsettled. He has the weapons, and believes that he alone knows how to use them, but he has not chosen whether they will serve Toranaga or Ishido. He even considers waiting to see who ultimately prevails. The armory therefore gives him more than firepower: it creates a choice about when and for whom to commit his strength. Its arrival makes a new kind of warfare imaginable, while its concealment preserves Yabu’s freedom to bargain over the future.