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.

La primera batalla de Naktong fue un enfrentamiento entre el Comando de las Naciones Unidas y las fuerzas de Corea del Norte a principios de la guerra de Corea del 5 al 19 de agosto de 1950 en las cercanías de Yongsan y el río Naktong en Corea del Sur. Fue parte de la batalla del Perímetro de Pusan, y fue uno de los varios combates importantes que se libraron simultáneamente. La batalla terminó con una victoria de la ONU después de que un gran número de refuerzos estadounidenses destruyeran una división atacante de Corea del Norte.

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 Second Battle of Naktong Bulge was an engagement between United Nations Command (UN) and North Korean forces early in the Korean War from September 1 to September 15, 1950, along the Naktong River in South Korea. It was a part of the Battle of Pusan Perimeter, and was one of several large engagements fought simultaneously. The battle ended in a victory for the United Nations after large numbers of United States Army (US) troops repelled a strong Korean People's Army (KPA) attack.

The Battle of Ka-san was an engagement between United Nations Command (UN) and North Korean forces early in the Korean War from September 1 to September 15, 1950, in the vicinity of Ka-san , Chilgok County in South Korea. It was a part of the Battle of Pusan Perimeter, and was one of several large engagements fought simultaneously. The battle ended in a victory for the United Nations after large numbers of United States Army (US) and Republic of Korea Army (ROKA) troops repelled a strong Korean People's Army (KPA) attack.

The Battle of Yongsan was an engagement between United Nations Command (UN) and North Korean forces early in the Korean War from September 1–5, 1950, at Yongsan in South Korea. It was part of the Battle of Pusan Perimeter and was one of several large engagements fought simultaneously. The battle ended in a victory for the UN after large numbers of United States Army (US) repelled a strong Korean People's Army (KPA) attack.

In the Battle of the Bowling Alley , United Nations Command (UN) forces defeated North Korean forces early in the Korean War near the city of Taegu, South Korea. The battle took place in a narrow valley, dubbed the "Bowling Alley", north of Taegu. It followed a week of fighting between the Korean People's Army (KPA) 13th Division and the Republic of Korea Army's (ROKA) 1st Division along the latter's last defensible line in the hills north of the city. Reinforcements, including the US Army's 27th and 23rd Infantry Regiments were committed to bolster the ROKA defenses. This battle and several others were smaller engagements of the Battle of Pusan Perimeter.

The Battle of Chochiwon was an early engagement between United States and North Korean forces during the Korean War, taking place in the villages of Jeonui-myeon and Jochiwon in western South Korea on July 9–12, 1950. After four days of intense fighting, the battle ended in a North Korean victory.

The Battle of Yongdong was an engagement between United States and North Korean forces early in the Korean War. It occurred on July 22–25, 1950, in the village of Yongdong in southern South Korea. The newly arrived US Army 1st Cavalry Division was ordered there to cover the retreat of the US 24th Infantry Division after the Battle of Taejon. The 1st Cavalry Division soldiers, however, were untried in combat, and the North Korean Korean People's Army's (KPA) 3rd Division was able to outmaneuver them and force them back.

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.