Details/Information for Canadian Forces (CF) Operation United Nations Military Operations in Korea

CF Overseas Operations have most often operated within the construct of an international mandate. As such, the International Information is presented first in order to provide the context of the Canadian Operation (displayed second). Eventually, all rotations associated with the particular Canadian operation will also be displayed.

International Information

International Operation Name: United Nations Military Operations in Korea

International Mission Name: United Nations Military Operations in Korea

Mandating Organization: United Nations

Region Name: Asia

Location: Korea

Mission Date: 25 June 1950 - Ongoing

Canadian Operation:

No Canadian Operation Name 30 June 1950 – 1 August 1957

Mandate:

To repel the North Korean aggressors

UN Security Council Resolutions 82 (25 June 1950), 83 (27 June 1950), 84 (7 July 1950) and 85 (31 July 1950) (Chapter VII)

Mission Notes:

On 25 June 1950, North Korean military forces crossed the 38th parallel, invading South Korea in an effort to create a single unified Korean state. International reaction was swift. The United Nations Security Council passed Resolutions 82 (25 June 1950), 83 (27 June 1950), 84 (7 July 1950) and 85 (31 July 1950), which called upon North Korea to withdraw its forces north of the 38th parallel. United Nations members were requested to provide such assistance as would allow South Korea to expel the northern aggressors. Further, a unified United Nations Command (UNC) was formed of the military forces sent to assist South Korea, the UN forces to be led by the United States.

In Canada, the Cabinet met on 28 June to discuss possible Canadian responses to the Security Council requests. Lester Pearson, Secretary of State for External Affairs, indicated that the United States was reacting with more air and naval forces and that Great Britain was considering the contribution of a naval force. In addition, Pearson noted that the UN Secretary-General had requested two military officers several weeks previously, the officers to be employed with the United Nations Commission on Korea (UNCOK). Brooke Claxton, Minister of National Defence, indicated that Canada could contribute a number of destroyers and a small squadron of transport aircraft. All decisions on contributions were held off until all possibilities had been explored, although the two officers for UNCOK were approved (see entry for UNCOK and UNCURK).

Of the three military services, the Royal Canadian Navy was the only one in a position to provide a force for immediate deployment. On 30 June, three destroyers based on the west coast were ordered to sail for Pearl Harbor and onwards to Korea. It was only while in Pearl Harbor that HMCS Cayuga, Sioux and Athabaskan were advised that they would be under the operational control of General Douglas MacArthur as Commander United Nations Forces Korea. They arrived in Sasebo, Japan on 30 July, ready to join the defence of the Pusan (Busan) perimeter.

On 19 July, Cabinet approved the deployment of 426 Squadron, the RCAF’s only long-range transport squadron. 426 would be deployed under the operational command of the United States’ Military Air Transport Service, under the name Operation HAWK. They departed Montreal on 25 July, arrived at McChord Air Force Base, Washington state on the 26th and sent three aircraft to Japan on the 27th.

The question of sending ground troops was more problematic. There was an air of uncertainty as to whether the North Korean actions were an isolated incident, or whether the Soviet Union would use the apparent military weakness of the west to its own advantage. Canada had only one army formation that could be dispatched immediately – the Mobile Striking Force, which was tasked with the defence of Canada. To send this force would be to leave Canada without a ready response in case the Soviet Union challenged the newly-created NATO. Cabinet considered options through July about what type of ground contribution could be made, what equipment would be used (American or British), to whom would the force be attached. On 7 August, Cabinet agreed to send ground troops to Korea.

With the arrival of the RCAF and RCN in Japan in late July 1950, it would be another seven years before the last Canadian forces would be withdrawn from Korea.

Naval Forces during the War

Eight Canadian destroyers participated in the Korean Conflict, with all ships participating at least twice. It is beyond the scope of this description to provide a complete list of activities or a history of the RCN participation in Korea. During their initial deployment, Cayuga, Sioux and Athabaskan were deployed on the West Coast of Korea, under British command. They served as convoy and carrier escorts, participated in the Inchon landing as escorts for the logistics support group, attacked shore targets and protected friendly islands from sneak attacks. In addition they mounted anti-submarine patrols and from time to time landed and participated in several landings of South Korean Marines on more isolated off-shore islands. The occasional mine was detected and blown up by sending a motor cutter to attach explosives – a risky proposition. Aside from the risk from mines, perhaps the most dangerous part of the first patrol was the evacuation of UN forces from Chinnampo, the port for the North Korean capital of Pyongyang. Cayuga, Athabaskan, and several other allied vessels proceed up Taedong River, with its many shifting sandbars and undredged channels, and evacuated UN forces, bombarded targets ashore and escorted back numerous small craft filled with Korean refugees.

RCN vessels also operated on the East Coast of Korea with the USN. Here, the activities were similar to those on the West Coast, but with one addition. The East Coast of Korea is mountainous, but has a narrow coastal plain. Railway lines run along the coast, often in plain sight of ships at sea, and here, the UN destroyers were materially able to contribute to the war effort by attacking trains running along the coast. Those ships who could prove they had destroyed at least one train were able to join the “Trainbusters Club”. The RCN vessels took to the effort with a vengeance, destroying more trains than any other navy.

By the time of the Armistice, eight RCN destroyers had participated in the conflict: HMCSs Athabaskan – 3 deployments; Cayuga – 2 deployment; Crusader – 1 deployment; Haida – 1 deployment; Huron – 2 deployments; Iroquois – 2 deployments; Nootka – 2 deployments and Sioux – 2 deployments.

Air Forces during the War

The RCAF contributed one transport squadron to the United Nations effort, and 22 fighter pilots on exchange with the USAF. The main thrust of RCAF activities in the period of the Korean War was to build up its own forces and deploy them to Europe, providing support to NATO at a time when a large portion of USAF resources were engulfed in Korea and when the Soviet union could have taken advantage of perceived NATO weaknesses.

During the Korean War, 426 Squadron served with the USAF in transporting personnel and supplies to the Korean theatre. These operations are described in the entry under Operation HAWK.

In March 1951, the USAF suggested that RCAF pilots would benefit from exchanges with USAF squadrons in the Korean theatre. Canada accepted the offer as a way of giving RCAF pilots combat experience and a programme was instituted to post them, on an individual basis, to either the 18th Interceptor Wing at Kimpo just west of Seoul, or the 51st Fighter Interceptor Wing at Suwon, south of Seoul. Their tour of duty would be six months or 50 combat missions, whichever came first; most found that they flew the requisite sorties in three to four months, accumulating about 70 hours of combat flying time, and 20 hours non-combat.

The first pilot dispatched under this programme was Flying Officer B. Simpson, but he was not the first Canadian to see combat in Korea, as Flight Lieutenant Omer Levesque had already been on exchange with the USAF when war broke out in Korea and proceeded there with his American squadron.
The two squadrons undertook a myriad of roles: fighter sweeps and patrols behind enemy lines; combat air patrols covering the search and rescue of downed pilots; fighter bomber missions; and escorting photo reconnaissance aircraft.

Overall, RCAF pilots scored nine “kills”, two “probables” and 10 “damaged”. One pilot, Squadron Leader Andrew MacKenzie, was taken prisoner when his aircraft was accidentally shot down by one of his squadron mates. He was not released until 1955.

The RCAF also contributed other personnel. Thirteen RCAF Nursing Sisters flew with the USAF Military Air Transport Service, bringing wounded soldiers from Korea to the United States and Canada. Occasionally, they flew on 426 Squadron flights. The RCAF also sent, on an individual basis, technical experts in a variety of trades for brief periods of time.

Ground Forces during the War

When Canada decided to contribute land forces to the conflict the government chose to do so by mobilizing a volunteer “special service force” drawn largely from veterans of the Second World War. These became the 2nd Batallions of the three regular army infantry regiments (The Royal Canadian Regiment, the Princess Patricia’s Canadian Light Infantry and the Royal 22nd Regiment), supported initially by C Squadron, Lord Strathcona’s Horse (Royal Canadians) (2nd Armoured Regiment); 2nd Field Regiment Royal Canadian Horse Artillery; 57th Canadian Independent Field squadron (Royal Canadian Engineers), and the 25th Canadian Infantry Brigade Signals Squadron. First to arrive were 2nd Battalion PPCLI, in mid-February 1951, the rest of what would be called 25 Brigade following in May. The Brigade served under American command until the creation of the 1st Commonwealth Division.

Volunteers for the Special Service Force signed on for one-year. Accordingly, beginning in 1952, the original Special Service units and sub-units were replaced by the “regular” “first battalions” of the three infantry regiments and regular armoured, engineer and signal squadrons. All the other component corps of the army – medical, service, dental, ordnance, provost and RCEME - were of course represented in the theatre as well. The Royal Canadian Horse Artillery, it should be added, provided pilots for aerial surveillance and spotting duties. A third rotation took place one year later.

Although there was a dramatic ebb and flow to the Korean conflict in its early months, the front line had essentially stabilized by the time most Canadians who served there had arrived. Further, patrolling and holding the line were the norm, not major offensive operations. But that did not diminish their contribution. Indeed, at Kapyong and Hill 355, the steadfastness of the Canadian units against overwhelming Chinese forces was remarkable, and the allied line did not break. The Headquarters, 25 Canadian Infantry Brigade (25 CIB) was formed on 9 August 1950. It arrived in Korea on 4 May 1951 and left 2 December 1954 with the reduction of the Canadian contribution. A Canadian Section, Headquarters First (Commonwealth) Division was formed on 1 August 1951 and disbanded 20 May 1956. Canadian personnel attached to division headquarters, which included the position of GSO 1, the division’s principal staff officer, usually numbered from 20 to 30, and were responsible for planning within the 1st Commonwealth Division.

A Canadian Military Mission, Far East (CMMFE) was created in September 1950 to provide Canadian representation at the United Nations Forces (UNF) Headquarters in Tokyo. The Commander CMMFE responsibilities included making the preparation for the arrival of Canadian ground troops in theatre, advising the Canadian Chiefs of Staff on the general battle situation and on future United Nations Forces plans, and acting as a channel to convey information between Canada and the UNF. In these duties, he was responsible to the Commander, 25 Canadian Infantry Brigade.

While the bulk of Canadian personnel served in Korea, smaller numbers served in Japan, in support of the effort in Korea. These were mainly administrative units, and included an ordnance liaison group, a postal unit and signal troop. In June 1951 with the formation of the 1st Commonwealth Division, a Canadian contribution was made to the Commonwealth Hospital. The largest unit was the 25th Canadian Reinforcement Group, which was responsible for the holding and training of reinforcements until they were needed in Korea. All of these units were located at Kure, on the southwestern coast of the main island of Honshu.

In October 1951, it was decided to reorganize and streamline the Canadian forces involved in supplying the troops in Korea. The Canadian Section, Line of Communications and Base Troops, British Commonwealth Forces in Korea was created. To it were later added a convalescent centre, a leave unit and a welfare adjunct.

After the Armistice

Fighting in Korea came to an end on 27 July 1953, but the signing of the armistice on that date did not end the Canadian role in Korea. The armistice agreement was not signed by the governments involved in the United Nations’ efforts, but rather by the Commander, United Nations Command. As a result, it was the United Nations that acceded to the cease-fire and the military contribution that continued after the armistice was in support of the UN Command. There was considerable doubt as to whether either President Syngman Rhee of South Korea or the Chinese/North Korean forces would honour the armistice. The requirement to maintain forces in Korea therefore continued.
As a result, the RCAF continued Operation Hawk until 25 May 1954. Several fighter pilots also served on exchange with USAF forces in Korea. The RCN maintained three ships on station in Korean waters throughout 1954. It was not until 26 December 1954 that this was reduced to one ship. The RCN contribution was eliminated on 7 September 1955.

After the armistice, the First Commonwealth Division continued as a formation in Korea, although it later shifted its headquarters to Tokyo under the name British Commonwealth Forces, Korea (BCFK). The Division was disbanded in November 1954, although the title continued until March 1956. Canada continued to participate in the Commonwealth contingent, although there was no formal agreement.

The Canadian brigade did not reduce its strength until November 1954 when most of its units returned to Canada. The 25th Canadian Infantry Brigade Headquarters was disbanded in December 1954. These reductions were carried out in consultation with Commonwealth governments and the United Nations Command. Remaining in Korea were the 2nd Battalion, The Queen’s Own Rifles of Canada, No. 3 Field Ambulance, a provost detachment and three other minor units. Most of these were withdrawn in April 1955, leaving the total Canadian commitment at 20 officers and 260 men with the field forces in Korea and the headquarters in Japan. Further reductions in the UN would follow as the armistice seemed to hold. In March 1956, No. 3 Field Ambulance (RCAMC) departed to be replaced by the newly formed Canadian Medical Detachment composed of both medical and dental personnel. The CMMFE would also remain in Tokyo for a total Canadian contingent of 42 persons.

This arrangement was to last a little over one year. The last Canadian troops were pulled out of Korea and Japan in August 1957, leaving only one Canadian Officer and one Canadian NCM with the UNC.