Alexander Kolchak in the context of "Black Sea Fleet"

The Russian Civil War (Russian: Гражданская война в России, romanized: Grazhdanskaya voyna v Rossii) was a multi-party civil war in the former Russian Empire sparked by the 1917 overthrowing of the Russian Provisional Government in the October Revolution, as many factions vied to determine Russia's political future. It resulted in the formation of the Russian Socialist Federative Soviet Republic and later the Soviet Union in most of its territory. Its finale marked the end of the Russian Revolution, which was one of the key events of the 20th century.

The Russian monarchy ended with the abdication of Tsar Nicholas II during the February Revolution, and Russia was in a state of political flux. A tense summer culminated in the October Revolution, where the Bolsheviks overthrew the provisional government of the new Russian Republic. Bolshevik seizure of power was not universally accepted, and the country descended into a conflict which became a full-scale civil war in May–June 1918. The two largest combatants were the Red Army, fighting for the establishment of a Bolshevik-led socialist state headed by Vladimir Lenin, and the forces known as the White movement (and its White Army), led mainly by the right-leaning officers of the Russian Empire, united around the figure of Alexander Kolchak. In addition, rival militant socialists, notably the Ukrainian anarchists of the Makhnovshchina and Left Socialist-Revolutionaries, were involved in conflict against the Bolsheviks. They, as well as non-ideological green armies, opposed the Bolsheviks, the Whites and the foreign interventionists. Thirteen foreign states intervened against the Red Army, notably the Allied intervention, whose primary goal was re-establishing the Eastern Front of World War I. Three foreign states of the Central Powers also intervened, rivaling the Allied intervention with the main goal of retaining the territory they had received in the Treaty of Brest-Litovsk with Soviet Russia.

The White movement, also known as the Whites, was one of the main factions of the Russian Civil War of 1917–1922. It was led mainly by the right-wing and conservative officers of the Russian Empire, while the Bolsheviks who led the October Revolution in Russia, also known as the Reds, and their supporters, were regarded as the main enemies of the Whites. It operated as a system of governments and administrations united as the Russian State, which functioned as a military dictatorship throughout the most of its existence, and military formations collectively referred to as the White Army, or the White Guard.

Although the White movement included a variety of political opinions in Russia opposed to the Bolsheviks, from the republican-minded liberals through monarchists to the ultra-nationalist Black Hundreds, and lacked a universally-accepted doctrine, the main force behind the movement were the conservative officers, and the resulting movement shared many traits with widespread right-wing counter-revolutionary movements of the time, namely nationalism, racism, distrust of liberal and democratic politics, clericalism, contempt for the common man and dislike of industrial civilization; in November 1918, the movement united on an authoritarian-right platform around the figure of Alexander Kolchak as its principal leader. It generally defended the order of pre-revolutionary Imperial Russia, although the ideal of the movement was a mythical "Holy Russia", what was a mark of its religious understanding of the world. The positive program of the movement was largely summarized in the slogan of "united and indivisible Russia [ru]" which meant the restoration of imperial state borders, and its denial of the right to self-determination. The Whites are associated with pogroms and antisemitism; while the relations with the Jews featured a certain complexity, the movement was largely antisemitic, with the White generals viewing the Revolution as a result of a Jewish conspiracy. Antisemitism and more broad nationalism and xenophobia of the movement were manifested in the acts of the White Terror, which often targeted non-Russian ethnic groups of the former Russian Empire.

The Russian Army (Russian: Русская армия, romanized: Russkaya armiya) was the armed forces of the White movement, united on an all-Russian scale in 1919 under the sole formal command of Alexander Kolchak, the Supreme Commander-in-Chief of all the armed forces of the Russian State.
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The Order of Saint George (Russian: Орден Святого Георгия, romanized: Orden Svyatogo Georgiya) is the highest military decoration of the Russian Federation. It was originally established on 26 November 1769 Julian (7 December 1769 Gregorian) as the highest military decoration of the Russian Empire for commissioned officers and generals by Empress Catherine the Great. After the October Revolution in 1917, it was awarded by the White movement under Alexander Kolchak until their collapse in 1921. The order was revived in the Russian Federation on 20 March 1992 by Decree No.1463 of the President of Russia. The current award criteria were amended on 7 September 2010 by Presidential Decree 1099.

The Supreme Ruler of Russia (Russian: Верховный правитель России, romanized: Verkhovnyy pravitel' Rossii), also referred to as the Supreme Leader of Russia, was the head of state and Supreme Commander–in–Chief of the Russian State, an anti-Bolshevik government under a military dictatorship established by the White Movement during the Russian Civil War. For nearly two years from November 1918 until April 1920, the armies of the White Movement were nominally united under the administration of the Russian State, during which the Russian State claimed to be the sole legal government of Russia. The office's sole holder for most of its existence, and the only one to officially adopt the titles and functions of the Supreme Ruler, was Admiral Alexander Kolchak, who was elected to the position by the All-Russian Council of Ministers following the November 18 coup which overthrew the Directory.

All commanders of the White armies in the south and west of Russia, as well as in Siberia and the Far East recognized the Supreme Ruler; at the turn of May — June 1919, the generals Anton Denikin, Yevgeny Miller, and Nikolai Yudenich voluntarily submitted to Alexander Kolchak and officially recognized his Supreme Command over all armies in Russia. The Supreme Commander at the same time confirmed the powers of commanders. For nearly two years, Alexander Kolchak was supported both diplomatically and militarily by the former Allied Powers of World War I. On 4 January 1920, Kolchak announced his resignation, granting the office of Supreme Ruler to Anton Denikin. Denikin served as the final acting Supreme Ruler of the Russian State, though he accepted neither the titles or functions of the office, which was finally declared extinct on 4 April 1920.

The Imperial Russian Air Service (Russian (pre-reform): Императорскій военно-воздушный флотъ, romanized: Imperatorskiy voyenno-vozdushnyy flot", lit. 'Emperor's Military Air Fleet') was an air force founded in 1912 for Imperial Russia. The Air Service operated for five years and only saw combat in World War I before being reorganized and renamed in 1917 following the Russian Revolution.

With the onset of the Russian Civil War, some former IRAS pilots joined Alexander Kolchak on the White Russian side, but the White movement never created an official air force. Most of what remained of the former Imperial Russian Air Service was reformed into the subsequent Soviet Air Forces.

The Provisional All-Russian Government, informally known as the Directory, the Ufa Directory, or the Omsk Directory, was a short-lived government of the Russian State during the Russian Civil War, formed on 23 September 1918 at the State Conference in Ufa as a result of a forced and extremely unstable compromise of various anti-Communist forces in eastern Russia. It was dissolved two months later after the coup, which had brought Admiral Alexander Kolchak to power in Communist-free areas of eastern Russia. It was meant to be a continuation of the original Russian Provisional Government that was overthrown during the October Revolution in 1917.

The Government was formed from the Committee of Members of the Constituent Assembly, mainly Socialist Revolutionaries and Kadets based in Samara, and from the Provisional Siberian Government of regional politicians and rightist officers and based in Omsk. The two regimes had previously failed to work effectively together, with rivalry leading to a customs war and to numerous border disputes. In November 1918 a military coup by right-wing Kadets, officers, and Cossacks, with some support from the Allies, overthrew the Provisional All-Russian Government and appointed Admiral Kolchak as the Supreme Leader of Russia. Kolchak, who had been the Minister of War in the government for two weeks, was supported by the coup faction to create a new government that would have no SR influence.