After Silla surrendered, two remaining countries from the three (Paekche [pronounced "Kudara" in Japanese: Kingdom of ancient Korea] and Koguryo [pronounced "Kokuri" in Japanese: Kingdom of ancient Korea]) surrendered to Japanese authority, one after another; so, this war affair came to be known as the Sankan-Seibatsu.
新羅が降伏した後、三韓の残り二国（百済、高句麗）も相次いで日本の支配下に入ったとされるためこの名で呼ばれる。