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 served as Russia's internationally recognized Head of State, and 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.