The Battle of Fujigawa was a crucial confrontation within the Genpei War, a conflict between the Minamoto and Taira clans in late 12th-century Japan. On a November night, Minamoto no Yoritomo, leading a formidable army of approximately 30,000, executed a well-coordinated surprise assault against the encamped Taira no Koremori, stirring a decisive encounter near the banks of the Fuji River. Yoritomo's strategic night attack sought to capitalize on the element of surprise and the numerical advantage that he commanded over the Taira forces. The rapid execution of this attack caught the Taira off guard, leading to chaos in their ranks.Despite the overwhelming Minamoto presence, Taira no Koremori showcased resilience and tactical acumen by leading a disciplined retreat. This allowed him to escape with remnants of his routed forces, thus maintaining the possibility of regrouping and resisting further campaigns. The battle underscored the importance of superior tactics and the element of surprise in warfare, cementing Yoritomo's reputation as an effective military leader early in the Genpei War. The ability of the Taira to withdraw while suffering defeat indicates the complexity of warfare even in moments of adversity.