Former Nine Years' War
The government forces , led by the Minamoto , had much trouble for quite some time , due to the harsh terrain and weather , but were eventually reinforced with new troops , including many offered by the Governor , a member of the Kiyohara clan , of the nearby Dewa province . In 1062 , Minamoto no Yoriyoshi , along with his son , led an assault on an Abe fortress at Siege of Kuriyagawa . They diverted the water supply , stormed the earthworks and stockade , and set the fortress aflame . 
<triplet> Siege of Kuriyagawa <subj> 1062 <obj> point in time