Formation and demonstration of Toranaga’s Musket Regiment

The formation and demonstration of Toranaga’s Musket Regiment reveals how an experimental drill could challenge both the tactics and the honor code of samurai warfare. Staged before Nebara Jozen as a mock battle, it shows Yabu’s musketeers using disciplined, successive volleys to stop an attacking force; the display persuades Jozen that firearms could break a line that swords and spears alone would otherwise carry forward. Toranaga subsequently enlarges the project into a regiment of nine assault battalions, transforming Yabu’s initiative into a wider military program.

Origins and Stakes

Yabu’s confidence in the experiment begins with the weapons taken from the European ship. Its hold contains five hundred muskets, twenty cannon, thousands of cannonballs, and abundant powder, shot, and fire arrows. The cache gives him a power he had never imagined, but its importance lies not only in quantity: it offers the means to test a military theory he has kept secret for years. He orders the arms moved to his castle at Mishima under camouflage and in secrecy, assigning Mura to provide porters and Igurashi to oversee the transport.

The possibility of using those weapons as a trained formation runs against established expectations. Although the Portuguese introduced muskets and gunpowder to Japan, Japanese makers began producing firearms within eighteen months, and guns had long been treated as novelties, used chiefly for hunting. Bows were considered more accurate, while warfare was shaped by individual, hand-to-hand combat and the sword’s higher honor. The samurai code associated honor with combat, service, and death; firearms, by contrast, were regarded as cowardly and dishonorable. Yabu’s proposal therefore risks more than a technical failure: it asks whether battlefield effectiveness can outweigh the inherited terms of warrior honor.

Yabu imagines five hundred chosen samurai trained as a unit and armed with muskets, supporting twelve thousand conventional troops. Twenty cannon, handled by specially trained men, would add another coordinated element. Rather than treating firearms as individual weapons, his plan makes training, formation, and command the source of their force. The demonstration tests that idea against the very kind of close attack that conventionally equipped samurai are expected to win.

The Mock Battle

Jozen first objects that the musketeers have no swords and would be massacred by armed samurai. The exercise overturns that expectation in stages. The attackers dismount, and warriors from both sides begin to select opponents for a conventional contest. Then the musketeers form five compact phalanxes, each four ranks deep and twenty-five men across. Three advance while two remain in reserve forty paces behind. On command, the formation charges, halts within range, and fires a synchronized volley of blank ammunition.

The drill makes rank and sequence more important than individual combat. The first rank kneels to reload while the second fires over it; the third and fourth repeat the pattern. In the staged confusion, defenders fall as if struck, and the valley fills with apparent cries and disorder. Jozen protests that the attackers are killing their own men, but Yabu explains that the ammunition is blank and that the scene is being acted. The point is not to claim that the drill has inflicted real casualties. It is to make the likely effect of real bullets imaginable.

The defenders then regroup and counterattack. This time the front rank fires from a kneeling position, the second fires standing and kneels to reload, and the following ranks continue the sequence. The firing is imperfect: some musketeers are slow and the ranks uneven. Even so, the counterattack falters and breaks apart. The defenders retreat up the rise, leaving simulated dead on the ground. Yabu’s formation has not yet proved itself in battle, but its repeated volleys make the cost of attacking it visible to its observers.

The exercise does not end with the first apparent success. The defenders rally, bring in their reserves, and launch a final general attack with battle cries. The phalanxes initially break and flee. Once they have run a considerable distance, however, they regroup on command in a V formation and resume firing. The attackers’ advance falters and stops. The mock battle ends with the simulated bodies rising, weapons being collected, and participants laughing or limping away; some are hurt. Its theatrical reversals make the lesson sharper: the formation can be broken, but disciplined withdrawal and re-formation can restore its firepower.

Jozen’s Assessment and the Bayonet

Jozen’s response changes from alarm to respect. He congratulates Yabu sincerely and recognizes that guns of this kind could break an army’s line: the ranks would not remain closed under repeated volleys, opening a gap through which ordinary troops and cavalry could attack the sides. He judges that, under real conditions, the two thousand opposing men would have been slaughtered. His initial assumption—that men without swords must be helpless—has yielded to an understanding of how coordinated fire might determine the encounter before conventional warriors reach them.

Yabu, inwardly delighted by the effect, does not pretend the unit is finished. He acknowledges that the firing was ragged and estimates that training will take months. The demonstration thus offers no simple claim of instant superiority: its force depends on sustained discipline, command, and improvement. When Jozen jokes about the risk of a jammed musket or wet powder, Yabu orders Omi to show another feature. The men draw short, sheathed bayonet swords from behind their belts and lock them onto their musket muzzles. The attachment addresses the weapon’s vulnerability at close quarters by giving the musketeer a blade for a charge.

Toranaga’s Expansion of the Force

Ten days after Jozen and his men are killed, Toranaga arrives at Anjiro with Buntaro and troops aboard three galleys. At eleven in the morning, he asks to see an exercise with the original five hundred at once. Yabu, caught unprepared by the sudden arrival, requests time to prepare. Toranaga instead establishes a permanent camp on the plateau, keeps two hundred guards at the fortress, and tells Yabu that he intends to see the training exercise.

Toranaga’s response turns the demonstration from an isolated proof of concept into a plan for expansion. If the attack is as effective as reported, he says, the force will become nine assault battalions of five hundred samurai each, organized as one regiment under Buntaro’s command. He has brought another thousand selected samurai for Yabu to train, and says that he has also brought a thousand muskets with ample powder and shot; the remaining supplies and another thousand men are due within a week. The resulting scale is distinct from Yabu’s original proposal of five hundred trained musketeers supporting twelve thousand conventional troops: Toranaga now describes nine five-hundred-man battalions as a single regiment.

The event’s decisive significance lies in that movement from concealed theory to witnessed drill and then to organized expansion. The blank volleys do not establish how the unit will perform in a real battle, and the uneven firing makes clear that training remains unfinished. But the drill persuades Jozen of the formation’s potential, prompts Toranaga to commit men and weapons, and places the new regiment under a named commander. Firearms, previously dismissed as dishonorable, become a force to be trained, supplied, and incorporated into the coming military struggle.