Temporary Military Railway
The Temporary Military Railway was a Japanese military railway administration established in 1904 to build and operate the Gyeongui Line across the Korean Empire.
Last updated August 26, 2026
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Overview
The Temporary Military Railway, more precisely the Temporary Military Railway Office, was a pseudo-corporate railway entity created by the Imperial Japanese Army during the Russo-Japanese War. Its principal task was to take control of the Korean government’s Western Railway project and complete a line from Gyeongseong, now Seoul, northward through Gaeseong and Pyeongyang to Sinuiju on the Yalu River. The resulting railway became the Gyeongui Line, one of the principal transport corridors of the Korean Peninsula. The organization emerged from a long-running but unsuccessful effort to construct a railway between the Korean capital and the northwest. In 1896, the French company Fives Lille received rights to build a Korean railway, but could not obtain the necessary financing. The concession passed to the Korean Railway Company in 1899, with no more success. In 1900, the Korean government’s Western Railway began route surveys, and construction of the first section of the future Gyeongui Line started in 1902. Japan viewed the proposed northwestern railway as strategically important. It had already secured a concession for the Gyeongbu Line between Seoul and Busan and sought influence over the north–south transport system as a whole. After the Russo-Japanese War began in 1904, Japan disregarded Korea’s declaration of neutrality, landed troops at Incheon, and compelled the Korean government to accept an agreement giving Japan’s military authority over railway projects considered necessary for military operations. The Imperial Japanese Army consequently established the Temporary Military Railway Office and assumed control of the Western Railway. The railway was built primarily for strategic and logistical purposes rather than as an ordinary commercial enterprise. The Yongsan–Gaeseong section was completed in March 1904. The Pyeongyang–Sinuiju section was completed on 28 April 1905, and freight services between Yongsan and Sinuiju began on 5 November 1905. Although the Russo-Japanese War ended on 5 September 1905, the army retained control of the organization and railway, reflecting Japan’s broader effort to consolidate its position in Korea. After bridges over the Cheongcheon and Daedong rivers were completed, through services became possible. The standard-gauge Gyeongui Line was formally opened on 3 April 1906. It extended approximately 496.7 kilometres between Yongsan and Sinuiju and became the second railway line opened on the Korean Peninsula. The line’s opening took place during a decisive period in Korea’s political subordination to Japan. The Second Japan–Korea Convention, signed in late 1905, had made the Korean Empire a Japanese protectorate, and the Japanese Resident-General subsequently developed a centralized railway administration. On 1 July 1906, the Resident-General’s administration established a Railway Office. On 1 September, that office took over the Gyeongui Line from the military administration and merged it with the Japanese-controlled Gyeongbu Railway to create the National Railway Administration. The Temporary Military Railway therefore ceased to exist as an independent operating entity. Its principal institutional legacy was the completed Gyeongui Line and the transfer of a military-built railway into Japan’s centralized colonial railway system. The organization also operated a significant locomotive fleet. It acquired six second-hand American-built 2-8-0 steam locomotives in 1904 for construction work and later freight service. It additionally ordered 52 2-6-2 tank locomotives, similar to locomotives ordered by the Gyeongbu Railway in 1901. The latter engines were delivered as knock-down kits and assembled at Incheon. After nationalization, the former locomotive groups were incorporated into the railway system and eventually received the designations Sorii class and Purei class, respectively.
History
Plans for a railway from the Korean capital toward the northwest existed by the late nineteenth century, but repeated attempts failed because of inadequate financing. Fives Lille obtained construction rights in 1896, then transferred them to the Korean Railway Company in 1899 after failing to fund the project. In 1900, the government-owned Western Railway began surveying a route from Gyeongseong toward Gaeseong, and construction commenced in 1902. Japan regarded this route as strategically valuable because it could connect the Korean Peninsula with the frontier facing Manchuria. Having obtained the concession for the Gyeongbu Line between Seoul and Busan, Japan also sought control over the northern route. When the Russo-Japanese War began in 1904, Japanese forces entered Korea despite the Korean government’s neutrality declaration. Japan then compelled the Korean government to grant its military control over railway projects deemed relevant to military operations. The Imperial Japanese Army established the Temporary Military Railway Office and took over the Western Railway. The Yongsan–Gaeseong section was completed in March 1904. The Pyeongyang–Sinuiju section followed on 28 April 1905, and freight operations between Yongsan and Sinuiju commenced on 5 November. The army retained the railway even after the war ended in September 1905. This continued military control reflected the railway’s role in Japan’s efforts to secure political and logistical dominance in Korea. Bridge construction over the Daedong and Cheongcheon rivers enabled through operation. The standard-gauge Gyeongui Line, measuring approximately 496.7 kilometres, formally opened on 3 April 1906. It was the second railway line opened on the Korean Peninsula. The line ran from Yongsan, near Gyeongseong, through Gaeseong and Pyeongyang to Sinuiju. The railway’s institutional transition occurred soon afterward. Following the creation of the Japanese protectorate system in Korea, the Resident-General’s administration established a Railway Office on 1 July 1906. On 1 September, the office took over the Gyeongui Line and merged it with the Japanese-controlled Gyeongbu Railway. The combined system became the National Railway Administration, ending the Temporary Military Railway’s separate existence. The office also maintained its own rolling stock. Six second-hand American 2-8-0 steam locomotives were acquired in 1904 and used first in construction and later in freight service. Fifty-two 2-6-2 tank locomotives were ordered in knock-down form and assembled at Incheon. Following nationalization, these locomotive groups were incorporated into the successor railway system and eventually classified as the Sorii and Purei classes.
- 1906
Gyeongui Line opens
[1]The completed 496.7-kilometre standard-gauge railway formally opened on 3 April.
- 1906
Temporary Military Railway is absorbed into the National Railway Administration
[1]The Resident-General’s Railway Office took over the Gyeongui Line on 1 September and merged it with the Gyeongbu Railway.
- 1905
Pyeongyang–Sinuiju section completed
[1]The northern section between Pyeongyang and Sinuiju was completed on 28 April.
- 1905
Freight service begins
[1]Freight operations between Yongsan and Sinuiju began on 5 November.
- 1904
Army railway office established
[1]The Imperial Japanese Army established the Temporary Military Railway Office and assumed control of the Western Railway during the Russo-Japanese War.
- 1904
Yongsan–Gaeseong section completed
[1]The railway section between Yongsan and Gaeseong was completed in March.
- 1902
Construction begins
[1]Construction began on the railway that would become the Gyeongui Line.
- 1900
Western Railway begins route surveys
[1]The Korean government-owned Western Railway surveyed a route from Gyeongseong toward Gaeseong.
- 1899
Rights pass to the Korean Railway Company
[1]The unsuccessful Fives Lille concession was transferred to the Korean Railway Company.
- 1896
Fives Lille receives railway construction rights
[1]The French company Fives Lille obtained rights to build a railway in Korea, but the project did not proceed because financing could not be secured.
Products and positioning
A military-controlled railway construction and operating administration created to provide Japan with a strategic transport corridor across the Korean Empire.
Railway line · 1906
Gyeongui Line
The Gyeongui Line was the Temporary Military Railway’s principal infrastructure project. Built to standard gauge, it connected Yongsan near Gyeongseong with Sinuiju through Gaeseong and Pyeongyang. The line covered approximately 496.7 kilometres and was designed to support both freight movement and military logistics. After bridge works were completed, it opened for through service on 3 April 1906 and was transferred to the Resident-General’s Railway Office later that year.
Locomotives · 1904
2-8-0 steam locomotives
The office acquired six second-hand American-built 2-8-0 steam locomotives in 1904. They were initially used for railway construction and subsequently operated freight trains. After the railway was nationalized, the locomotives were incorporated into the successor system and eventually became associated with the Sorii-class designation.
Locomotives · 1904
2-6-2 tank locomotives
Fifty-two 2-6-2 tank locomotives were ordered for the railway. They were technically similar to 2-6-2 locomotives ordered by the Gyeongbu Railway in 1901. Delivered as knock-down kits, they were assembled at Incheon. Following nationalization, they entered the successor railway fleet and were eventually designated as the Purei class.
Brand decisions
1906
Merger into the National Railway AdministrationM&ABackground
After the Japanese Resident-General established a Railway Office, the separate military administration was no longer retained as the operating structure for the Gyeongui Line.
Action taken
On 1 September, the Railway Office took over the Gyeongui Line and combined it with the Gyeongbu Railway to form the National Railway Administration.
Aftermath
The Temporary Military Railway ceased to operate as an independent entity, while its line and rolling stock continued under the successor administration.
1904
Military takeover of the Western Railway projectStrategyBackground
Japan sought control of the railway linking the Korean capital with the northwestern frontier because of its military value during the Russo-Japanese War and its wider policy of expanding influence in Korea.
Action taken
The Imperial Japanese Army established the Temporary Military Railway Office and took over the Korean government’s Western Railway project.
Aftermath
The railway was completed under military administration and later incorporated into Japan’s centralized railway system in Korea.
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