Vilno Military District was a Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n military district

Military district (Russian Empire)

In the Imperial Russian Army, a military district was a territorial association of military units, formations, military schools, and various local military establishments...

 of the Imperial Russian Army

Imperial Russian Army

The Imperial Russian Army was the land armed force of the Russian Empire, active from around 1721 to the Russian Revolution of 1917. In the early 1850s, the Russian army consisted of around 938,731 regular soldiers and 245,850 irregulars . Until the time of military reform of Dmitry Milyutin in...

.

In the Russian Empire, military district

Military district

Military districts are formations of a state's armed forces which are responsible for a certain area of territory. They are often more responsible for administrative than operational matters, and in countries with conscript forces, often handle parts of the conscription cycle.Navies have also used...

s were first formed by Dmitry Milyutin

Dmitry Milyutin

Count Dmitry Alekseyevich Milyutin was Minister of War and the last Field Marshal of Imperial Russia...

 in 1862–64 to replace the pre-existing Military Inspectorates. The military districts were organised to include civilian administration regions of gubernyas and uyezd

Uyezd

Uyezd or uezd was an administrative subdivision of Rus', Muscovy, Russian Empire, and the early Russian SFSR which was in use from the 13th century. Uyezds for most of the history in Russia were a secondary-level of administrative division...

s.

The Vilno Military District comprises

• Vilno
  Vilna Governorate
  The Vilna Governorate or Government of Vilna was a governorate of the Russian Empire created after the Third Partition of the Polish-Lithuanian Commonwealth in 1795...
  
  
• Grodno
  Grodno Governorate
  The Grodno Governorate, was a governorate of the Russian Empire.-Overview:Grodno: a western province or government of Europe lying between 52 and 54 N lat 23 and E long and bounded N by Vilna E by Minsk S Volhynia and W by the former kingdom of Poland The country was a wide plain in parts very...
  
  
• Kovno
  Kovno Governorate
  The Kovno Governorate or Government of Kovno was a governorate of the Russian Empire. Its capital was Kovno . It was formed on 18 December 1842 by tsar Nicholas I from the western part of the Vilna Governorate, and the order was carried out on 1 July 1843. It used to be a part of Northwestern Krai...
  
  
• Kurland
  Courland Governorate
  Courland Governorate, also known as the Province of Courland, Governorate of Kurland , and Government of Courland , was one of the Baltic governorates of the Russian Empire, that is now part of the Republic of Latvia....
  
  
• Livonia (without Pernov, Fellinskiy, Valkskiy and Verrosskiy uyezds)
• Vitebsk
• Mogilev
  Mogilev Governorate
  The Mogilev Governorate or Government of Mogilev was a governorate of the Russian Empire in the territory of the present day Belarus. Its capital was in Mogilev....
  
  
• Minsk
  Minsk Governorate
  The Minsk Governorate or Government of Minsk was a governorate of the Russian Empire. The seat was in Minsk. It was created in 1793 from the land acquired in the partitions of Poland, and lasted until 1921.- Administrative structure :...
  
  
• Suwałki  (without the Shchuchinsk uyezd)

The corps headquarters were in Riga

Riga

Riga is the capital and largest city of Latvia. With 702,891 inhabitants Riga is the largest city of the Baltic states, one of the largest cities in Northern Europe and home to more than one third of Latvia's population. The city is an important seaport and a major industrial, commercial,...

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Units based at Vilno Military District at the outbreak of the First World War:

• 20th Army Corps
  20th Army Corps (Russian Empire)
  The Twentieth Army Corps of the Imperial Russian Army was a World War I corps that fought on the Eastern theatre of war.Before World War I 20th Corps was stationed in the Vilno Military District, with corps headquarters in Riga.-History:...