The 1553 siege of Katsurao was one of many sieges undertaken by the warlord Takeda Shingen in his long campaign to gain control of Japan's Shinano province, which was ruled by a hodgepodge of minor daimyō, notably the Suwa, Ogasawara, Murakami and Takato.
Shingen mounted his first invasion of Shinano in 1542 and steadily worked his way northwards, defeating the Suwa and Takato by 1547. His inexorable advance through the province alarmed the Uesugi clan, which controlled Echigo province to the north, and in 1547 Uesugi Norimasa sent an army into the province to confront Shingen, but this was swept aside at Odaihara. At this point the Murakami and Ogasawara finally entered the fray, and Murakami Yoshikiyo succeeded in defeating Shingen at Uedahara (1548), but Shingen regrouped and went back on the offensive.
HistoryLayer draws the world as it was in any year from 123,000 BCE to
2026. Move the slider and the borders redraw for that year; the map
carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each
one readable in place. Signing in is optional and lets you keep what
you find.