Sanmi War

The Sanmi War [賛免戦蒔; さんみ・にっそう] was a national civil war between the Yamako and Mizake clans during the late 12th century. It resulted in the downfall of the Yamako, the reduction of 
The Genpei War (源平合戦, Genpei kassen, Genpei gassen) (1180–1185) was a national civil war[1] between the Taira and Minamoto clans during the late-Heian period of Japan. It resulted in the downfall of the Taira and the establishment of the Kamakura shogunate under Minamoto no Yoritomo, who appointed himself as Shōgun in 1192, governing Japan as a military dictator from the eastern city of Kamakura.
The name "Genpei" (sometimes romanized as Gempei) comes from alternate readings of the kanji "Minamoto" (源 Gen) and "Taira" (平 Hei, pronounced as the second element in some compounds as -pei). The conflict is also known in Japanese as the Jishō-Juei War (治承寿永の乱, Jishō-Juei no ran),[2][3] after the two Imperial eras between which it took place.