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| 1950 Battle of Inchon | |
|---|---|
| Conflict | Battle of Inchon |
| Partof | Korean War |
| Date | 15–17 September 1950 |
| Place | Incheon, Inchon, Wolmido, Yellow Sea |
| Result | United Nations Command amphibious victory |
| Combatant1 | United Nations Command |
| Combatant2 | Korean People's Army |
| Commander1 | Douglas MacArthur, Edwin A. Walker, Oliver P. Smith, Edward M. Almond |
| Commander2 | Choe Yong-gon, Kim Chaek, Kim Il-sung |
| Strength1 | United States Eighth Army, X Corps (United States), United States Marine Corps |
| Strength2 | Korean People's Army KPA I Corps |
| Casualties1 | Light naval and amphibious casualties |
| Casualties2 | Heavy personnel and materiel losses, many captured |
1950 Battle of Inchon was an amphibious assault executed by United Nations Command forces during the Korean War that resulted in a decisive reversal of Korean People's Army gains in South Korea. Launched on 15 September 1950, the operation combined naval, marine, and army units under the overall direction of Douglas MacArthur and the tactical control of X Corps (United States), achieving strategic surprise against KPA defenses on the Incheon peninsula and the vital port of Seoul. The operation's success precipitated the collapse of KPA front-line cohesion and enabled UN forces to retake Seoul within weeks.
By August 1950 the Korean War had seen rapid advances by Korean People's Army formations into Pusan Perimeter territory opposite United States Eighth Army units commanded by Walton Walker. The UN coalition—comprising United States, United Kingdom, Turkey, Australia, Canada, France, Netherlands, and other member states—sought a decisive maneuver to relieve pressure on Pusan and reverse the KPA offensive. Douglas MacArthur, Supreme Commander for the United Nations Command, proposed an amphibious landing at Incheon to sever KPA supply lines, threaten Seoul, and complement a frontal breakout by Eighth Army forces along the Naktong defenses.
MacArthur's planning drew upon precedent amphibious doctrine from Normandy and Mediterranean operations and incorporated intelligence from Office of Naval Intelligence, Central Intelligence Agency, and naval reconnaissance by United States Navy assets. Hydrographic challenges—extreme tidal ranges in the Yellow Sea, narrow channels, and extensive Incheon tidal flats—required detailed surveys undertaken by Underwater Demolition Teams and Royal Navy liaison. Deception and operational security were emphasized to mask the objective from KPA and People's Volunteer Army observers, while aerial reconnaissance by US Air Force units and signals intelligence sought to determine KPA dispositions near Wolmido and Incheon harbor.
The landing force was organized under X Corps (United States), commanded by Edward M. Almond, with amphibious assault phases led by United States Marine Corps and United States Army units including the 1st Marine Division and the 7th Infantry Regiment (United States). Naval gunfire and carrier-based air support were provided by units of the United States Navy and carrier groups including USS Valley Forge (CV-45), with planning input from Vice Admiral Arthur D. Struble. Opposing them were Korean People's Army garrison forces in the Inchon area, commanded regionally by KPA I Corps and influenced by directives from Kim Il-sung and the leadership of Choe Yong-gon.
On 15 September 1950, amphibious waves went ashore after preparatory bombardments from United States Navy cruisers and destroyers and air strikes from Task Force aircraft. Initial beachheads were secured on the west and south approaches to Incheon, with Wolmido island targeted for neutralization to protect landing corridors. Assault units, supported by Underwater Demolition Teams and naval gunfire, negotiated the tidal flats to reach defensible positions. Coordination with carrier aviation from USS Valley Forge (CV-45) and close support from TF 77 provided suppression of KPA coastal batteries and interdicted reinforcements moving toward Incheon.
Fighting around Wolmido and the approaches to Incheon intensified as KPA defenders—entrenched infantry, coastal artillery, and logistical detachments—sought to repel the landings. Urban and island combat involved house-to-house clearing, suppression of artillery emplacements, and counterattacks repulsed by combined arms teams drawn from the 1st Marine Division, 7th Infantry Regiment (United States), and naval fire support groups. The capture of Wolmido facilitated safe passage for follow-on echelons and enabled armored and mechanized units to move inland. Rapid advances from the beachheads threatened Seoul, creating opportunities to encircle and collapse KPA positions in the northwestern corridor of the peninsula.
The success of the operation produced an immediate strategic envelopment: UN Command forces cut KPA rear areas and supply routes, accelerating the collapse of KPA forces occupying Seoul and prompting a rapid withdrawal toward the Amnok River and northern strongholds. The operation relieved pressure on the Pusan Perimeter and enabled a coordinated offensive toward Pyongyang later in 1950. Politically, the landing bolstered United Nations cohesion, vindicated MacArthur's audacious planning in the eyes of Washington, and influenced subsequent deliberations in United States Department of Defense and United Nations councils. The maneuver also shaped Chinese calculations that later led to involvement by the People's Republic of China under directives influenced by leaders such as Mao Zedong and Zhou Enlai.
Casualty estimates vary: UN Command losses in the immediate operation were comparatively light in personnel and materiel relative to the gains achieved, while Korean People's Army casualties included large numbers killed, wounded, and captured, as well as the loss of substantial quantities of equipment and supplies. Naval platforms incurred damage from shore batteries in some engagements, and UN aircraft sustained losses during close air support missions and interdiction sorties. The operation's disproportionate attrition of KPA combat power around Incheon and Seoul was a decisive factor in the subsequent operational phase of the Korean War.
Category:Battles of the Korean War Category:United Nations Command operations