When the Jinshin War broke out, HATA no Yakuni was a shogun of the Omi Imperial Court army among several tens of thousands of soldiers led by YAMABE no Okimi (Prince Yamabe), SOGA no Hatayasu, and KOSE no Hito.
壬申の乱が勃発したとき、羽田矢国は近江の朝廷の軍の将として、山部王、蘇我果安、巨勢比等（巨勢人）が率いた数万の軍の中にあった。