Sengoku Japan: The Unification

250 dead

This is the number that actually matters on this page. Two hundred and fifty warring domains, fighting more or less continuously for over a century, were reduced by 1615 to a single centralised authority that then kept the peace for two hundred and fifty more years — a trade of catastrophic, concentrated violence for an almost unmatched span of subsequent stability, purchased in a war whose logic ended by consuming the family that had done most to win it.

17,000 dead

The dead at Mount Hiei were overwhelmingly non-combatants — monks, the women and children who lived on the mountain, and refugees who had fled there believing eight centuries of sanctuary still meant something. Nobunaga's own chroniclers recorded the killing without apparent unease, which is itself a measure of how completely he had redefined what unification required.

32,000 dead

Sekigahara's toll includes not just the battle itself but the pursuit and mopping-up that followed a mid-battle defection collapsing an entire army's cohesion within hours — the kind of casualty spike that a betrayal, rather than a hard-fought battle, tends to produce once one side simply stops functioning as an army.

220,000 dead

The figures on this page are necessarily approximate — Sengoku-era Japanese sources routinely inflate army sizes for propaganda effect, and the same battle is often reported with wildly different strengths by the winning and losing side's chroniclers. Modern historians generally treat the largest reported numbers, including the 220,000 said to have besieged Odawara, with real scepticism, though even conservative estimates describe forces on a scale most of contemporary Europe could not have matched.