La batalla del Estrecho de Corea fue una pequeña batalla naval librada en el primer día de la guerra de Corea; 25-26 de junio de 1950, entre las fuerzas navales de Corea del Sur y Corea del Norte. Un transporte de tropas norcoreano con cientos de soldados, intentó desembarcar cerca de Busan, pero fue descubierto y hundido por un bote patrulla surcoreano. Fue una de las acciones de la primera superficie de la guerra y dio lugar a una importante victoria de Corea del Sur.

The Battle of Chuncheon was one of a series of coordinated attacks beginning on 25 June 1950 that marked the beginning of the Korean War.

The Battle of Ongjin Peninsula was a series of battles that occurred in Ongjin Peninsula between 25 and 26 June 1950 and was a part of the Operation Pokpung and Operation Western Region that marked the beginning of the Korean War. On 25 June, the Korean People's Army (KPA) 3rd 38-Guard Brigade, reinforced with the 1st Infantry Regiment of the 6th Infantry Division, launched a surprise attack on the Republic of Korea Army (ROKA) 17th Infantry Regiment in Ongjin Peninsula, modern-day Ongjin and Kangryong. The battle ended on 26 June with a KPA victory, but many ROKA troops were able to escape from the peninsula.