Battle of Baekgang

The Battle of Baekgang, also known as the Battle of Hakusukinoe, took place on 27–28/08/663 CE along the Geum River on the Korean Peninsula. This naval conflict involved the combined forces of Yamato Japan and Baekje against the allied forces of Silla and the Tang Dynasty. It represents one of the earliest large-scale international military engagements involving Japan. The battle occurred after the fall of Baekje in 660 CE, when remnants of the kingdom sought assistance from Yamato Japan to restore their state. In response, the Yamato court dispatched a fleet and troops to support Baekje loyalists. The allied Yamato–Baekje forces advanced toward the Geum River, where they encountered the Silla–Tang naval forces positioned to block their progress. Over the course of two days, intense naval fighting took place. Historical records, including Japanese and Chinese sources, describe repeated engagements in which the Yamato fleet attempted to break through enemy lines. The Silla–Tang alliance, however, maintained a coordinated defense and inflicted heavy losses on the opposing forces. Many Japanese ships were destroyed or driven back, leading to a decisive defeat for the Yamato–Baekje side. The outcome of the battle ended efforts to restore Baekje and reduced Yamato Japan’s direct military involvement on the Korean Peninsula. Following the defeat, Japan shifted its focus toward internal consolidation and defense, while Silla, with Tang support, continued its campaigns that would lead to the unification of much of the peninsula.