The 5th Siberian Army Corps was an Army corps in the Imperial Russian Army.
The formation was formed, in 1904, from the 54th reserve brigade of the Kazan Military District, deployed in a corps consisting of two divisions during the Russian-Japanese war of 1904–1905. The corps staff was formed on the basis of the headquarters of the 54th reserve brigade. The corps divisions received numbers 54th and 71st infantry.
In 1910 it was re-formed.
Composition 1904: 54th Infantry Division 71st Infantry Division 1914: 3rd Siberian Rifle Division 6th Siberian Rifle Division Part of Amur Military District: 1904–06.1914 1st Army: 10.1914 – 01.1915 2nd Army: 02.1915 – 09.1915 4th Army: 09.1915 – 02.1916 12th Army: 03.1916 – 04.1916 6th Army: 04.1916 – 05.1916 8th Army: 06.1916 – 07.1916 11th Army: 07.1916 – 1917
Commanders 01.1904-05.1906: Leonid Dembowsky 06.1910-07.1911: Nikolai Podvalnyuk 09.1911-12.1913: Pavel Savvich 12.1913-02.1914: Arkady Sychevsky 02.1914-12.1914: Leonty Sidorin 12.1914-04.1917: Nikolai Voronov, 04.1917-11.1917: Alexander Turbin, 11.1917-02.1918: Captain Alexander Todorsky
Sources the article in the Russian Wikipedia, 5-й Сибирский армейский корпус.