The Battle of Chosin Reservoir, also known as the Chosin Reservoir Campaign or the Battle of Lake Changjin, was an important battle in the Korean War. The name "Chosin" is derived from the Japanese pronunciation "Chōshin", instead of the Korean pronunciation.
The 3rd Infantry Division is a combined arms division of the United States Army based at Fort Stewart, Georgia. It is a direct subordinate unit of the XVIII Airborne Corps and U.S. Army Forces Command. Its current organization includes a division headquarters and headquarters battalion, two armored brigade combat teams, one National Guard infantry brigade combat team, one task force battalion, one aviation brigade, a division artillery, a sustainment brigade and a combat sustainment support battalion along with a maneuver enhancement brigade. The division has a distinguished history, having seen active service in World War I, World War II, the Korean War, Vietnam War, and the Global War on Terror. The Medal of Honor has been awarded to 61 members of the 3rd Infantry Division, making the division the most honored in the Army.
The 2nd Infantry Division is a formation of the United States Army. Its current primary mission is the pre-emptive defense of South Korea in the event of an invasion from North Korea. There are approximately 17,000 soldiers in the 2nd Infantry Division, with 10,000 of them stationed in South Korea, accounting for about 35% of the United States Forces Korea personnel.
This is the Korean War order of battle. Subsidiary commands are listed on sub-pages. Where no date is shown for a command, assume it present at the start of the war, on June 25, 1950.
The 1st Cavalry Division is a combined arms division and is one of the most decorated combat divisions of the United States Army. It is based at Fort Hood, Texas. It was formed in 1921 and served during World War II, the Korean War, the Vietnam War, the Persian Gulf War, with the Stabilization Force in Bosnia-Herzegovina, in the Iraq War, in the War in Afghanistan and in Operation Freedom's Sentinel. As of October 2017, the 1st Cavalry Division is subordinate to III Corps and is commanded by Major General John B. Richardson.
The 7th Infantry Division is an active duty infantry division of the United States Army based at Joint Base Lewis-McChord charged with sustaining the combat readiness of two Stryker brigade combat teams, a combat aviation brigade, a division artillery headquarters, and a National Guard Stryker brigade combat team, as well as participating in several yearly partnered exercises and operations in support of U.S. Army Pacific and the Indo-Pacific region. The 7th Infantry Division is the only active-duty multi-component division headquarters in the Army. The 7th Infantry Division is also home to two of the Army's newest enabling battlefield capabilities, the Multi Domain Task Force and the Intelligence, Information, Cyber, Electronic Warfare and Space Capabilities, or I2CEWS battalion.
The 24th Infantry Division was an infantry division of the United States Army that was inactivated in October 1996. Formed during World War II from the disbanding Hawaiian Division, the division saw action throughout the Pacific theater, first fighting in New Guinea before landing on the Philippine islands of Leyte and Luzon, driving Japanese forces from them. Following the end of the war, the division participated in occupation duties in Japan, and was the first division to respond at the outbreak of the Korean War. For the first 18 months of the war, the division was heavily engaged on the front lines with North Korean and Chinese forces, suffering over 10,000 casualties. It was withdrawn from the front lines to the reserve force for the remainder of the war after the second battle for Wonju, but returned to Korea for patrol duty at the end of major combat operations.
The 25th Infantry Division is a United States Army division based at Schofield Barracks in Hawaii. The division, which was activated on 1 October 1941 in Hawaii, conducts military operations primarily in the Asia-Pacific region. Its present deployment is composed of Stryker, light infantry, airborne, and aviation units. Tropic Lightning soldiers serve as the premier Army response force for the U.S. Pacific Command, and regularly train with other U.S. military branches to practice and maintain joint operations capabilities. The climate and terrain of the Pacific region demands Tropic Lightning soldiers be able to operate in physically demanding and harsh environments. In 2014, the division opened the Jungle Operations Training Center—the first such school in the Army since the closing of the old Jungle Warfare School at Fort Sherman, Panama Canal Zone. Joint operations and training with partner states herald a new chapter in the history of Tropic Lightning—America's Pacific Division.
The 40th Infantry Division is a modular division of the United States Army. Following the army's modularization the division has become a four-brigade combat team with National Guardsmen from throughout the Pacific/Western United States and Oceania. Its division headquarters is located at Los Alamitos Joint Forces Training Base in Los Alamitos, California.
The Eighth Army is a U.S. field army which is the commanding formation of all United States Army forces in South Korea. It commands U.S. and South Korean units and is headquartered at the Camp Humphreys, in the Anjeong-ri of Pyeongtaek, South Korea. It is the only field army in the U.S. Army.
X Corps was a corps of the United States Army in World War II and the Korean War.
The Battle of Pork Chop Hill, known as Battle of Seokhyeon-dong Northern Hill in China, comprises a pair of related Korean War infantry battles during April and July 1953. These were fought while the United Nations Command (UN) and the Chinese and North Koreans negotiated the Korean Armistice Agreement. In the US, they were controversial because of the many soldiers killed for terrain of no strategic or tactical value, although according to US sources the Chinese lost many times the number of US soldiers killed and wounded. The first battle was described in the eponymous history Pork Chop Hill: The American Fighting Man in Action, Korea, Spring 1953, by S.L.A. Marshall, from which the film Pork Chop Hill was drawn. The UN won the first battle but the Chinese won the second battle.
The Philippine Army (PA) is the main, oldest and largest branch of the Armed Forces of the Philippines (AFP), responsible for ground warfare and as of 2021 had an estimated strength of 101,000 soldiers backed by 100,000 ready reserves. The service branch was established on December 21, 1935, as the Philippine Commonwealth Army. The Philippine Army has engaged in many conflicts including the ongoing Communist rebellion in the Philippines, the Moro conflict and, alongside other national military forces, in conflicts of international scope.
The 8th Mechanized Infantry Division is a military formation of the Republic of Korea Army.
The Capital Mechanized Infantry Division, also known as Fierce Tiger Division, is currently one of the six mechanized infantry divisions in the Republic of Korea Army. It is part of the VII Maneuver Corps, tasked with covering approaches to Seoul from North Korea and counterattack operations.
The 1st Infantry Division is a military formation of the Republic of Korea Army's I Corps. The division was established on 1947 under the command of Colonel Kim Suk-won.
The 142nd Field Artillery Regiment is a United States Army field artillery regiment currently represented in the Arkansas Army National Guard by the 1st Battalion, 142nd Field Artillery, headquartered in Bentonville, Arkansas; 2nd Battalion, 142nd Field Artillery, headquartered in Barling, Arkansas; and Battery F, 142nd Field Artillery stationed in Fayetteville, Arkansas, elements of the 142nd Field Artillery Brigade which is headquartered in Fayetteville, Arkansas. The regiment was created in 1917 from the former 2nd Arkansas Infantry. The 142nd Field Artillery shipped to France during World War I but did not see combat before the cessation of hostilities. The regiment was activated for World War II, but its battalions were redesignated as separate battalions, 1–142nd became the 936th Field Artillery Battalion, the 2–142nd became the 937th Field Artillery Battalion. The battalion's served throughout the European Theater of Operations. The battalions were activated again for the Korean War and served throughout the war. Following the Korean War, the separate battalions resumed their former designations of 1–142nd FA and 2–142nd FA. The 142nd Field Artillery Brigade, including both battalions, was activated for Operation Desert Storm. Elements of the 142nd Fires Brigade have been activated for service in Operation Noble Eagle and Operation Iraqi Freedom. The 142nd Fires Brigade was instrumental in support and recovery operations located in New Orleans, Louisiana after hurricanes Katrina and Rita devastated the Gulf Coast.
The Battle of Triangle Hill, also known as Operation Showdown or the Shangganling Campaign, was a protracted military engagement during the Korean War. The main combatants were two United Nations (UN) infantry divisions, with additional support from the United States Air Force, against elements of the Chinese People's Volunteer Army (PVA) 15th and 12th Corps. The battle was part of UN attempts to gain control of the "Iron Triangle" and took place from 14 October to 25 November 1952.
I Corps is a corps of the Korean People's Army Ground Force. It is headquartered at Hoeyang-up, Hoeyang County,
Onslow S. Rolfe was a career officer in the United States Army. He attained the rank of brigadier general during World War II as commander of the Mountain Training Center at Camp Hale, Colorado, and the 71st Infantry Division.
North Korea 
Korean People's Army 
