Aleksei Alekseyevich Brusilov (Russian: Алексей Алексеевич Брусилов, IPA: [ɐlʲɪkˈsʲej ɐlʲɪkˈsʲejɪvʲɪdʑ brʊˈsʲiɫəf]; 31 August [O.S. 19 August] 1853 – 17 March 1926) was a Russian and later Soviet general most noted for the development of new offensive tactics used in the 1916 Brusilov offensive, which was his greatest achievement. Born into an aristocratic military family, Brusilov trained as a cavalry officer, but by 1914 had realized that cavalry was obsolete against modern weapons of warfare such as machine gun and artillery. Historians portray him as the only First World War Russian general capable of winning major battles; his offensive strategy helped eliminate the Austro-Hungarian Empire as an independent fighting force. However, his victories resulted in heavy casualties that seriously weakened the Russian army, which was unable to replace its losses. Despite his noble status and prominent role in the Imperial Russian Army, he sided with the Bolsheviks in the Russian Civil War and aided in the early organization of the Red Army until retiring in 1924. Brusilov is one of the prominent Russian commanders in history, although not regarded as especially brilliant, he was pragmatic and open to change based on experience; his eponymous offensive succeeded in part from his willingness to properly train and prepare his troops, including in modern artillery and air reconnaissance. Source: Wikipedia (en)