Tachi Sword Tradition

Timeline

1. c. 900–1100Kyoto · KyotoIn the mid-Heian period Japanese swords transitioned from straight to curved, and the tachi form for mounted combat gradually took shape: worn edge-down with a curved blade for mounted slashing. Forging employed folding and jacket-steel methods, and blade signatures began to appear, marking the establishment of the Japanese sword as an independent craft system.
2. 1185–1220Kamakura · KamakuraAfter the Kamakura shogunate consolidated, demand for warrior military service spurred a booming swordsmith industry, with active schools in Bizen, Mino, and Yamashiro. As one of the standard sidearms of gokenin, the tachi's fittings (scabbard, hilt, guard) also grew more refined, and master smiths' works became important items of warrior family inheritance and political reward.
3. c. 1300–1400Japan · JapanThe wars of the Nanboku-chō period and the rise of ashigaru infantry tactics made the edge-up katana more convenient in foot combat, gradually replacing the tachi as the principal combat form. The tachi passed into ceremonial use, votive offerings, and symbols of high samurai status, while master tachi of the Kamakura–Muromachi transition remain pinnacle representatives of Japanese sword art.