One of the crucial factors that allowed the Minamoto to win the battle was that a Taira general by the name of Taguchi Shigeyoshi defected, and revealed to the Minamoto which ship the six-year-old Emperor Antoku was on.
One of the crucial factors that allowed the Minamoto to win the battle was that a Taira general, Miura Yoshizumi, defected and attacked the Taira from the rear. He also revealed to the Minamoto which ship the six-year-old Emperor Antoku was on.