The military ranks of the Soviet Union were those introduced after the October Revolution of 1917. At that time the Imperial Russian Table of Ranks was abolished, as were the privileges of the pre-Soviet Russian nobility. Immediately after the Revolution, personal military ranks were abandoned in favour of a system of positional ranks, which were acronyms of the full position names. For example, KomKor was an acronym of Corps Commander, KomDiv was an acronym of Division Commander, KomBrig stood for Brigade Commander, KomBat stood for Battalion Commander, and so forth. These acronyms have survived as informal position names to the present day. Personal ranks were reintroduced in 1935, and general officer ranks were restored in May 1940. Although they underwent some modifications, the ranks were based on those of the Russian Empire. Modified Imperial-style rank insignia were reintroduced in 1943. The Soviet ranks ceased to be used after the 1991 dissolution of the Soviet Union, although the military ranks and insignia of the modern Russian Federation and Ukraine have been largely adopted from the Soviet system. History 1918–1935 The early Red Army abandoned the institution of a professional officer corps as a "heritage of tsarism" in the course of the Revolution. In particular, the Bolsheviks condemned the use of the word "officer" and used the word "commander" instead. The Red Army abandoned epaulettes and ranks, using purely functional titles such as "Division Commander", "Corps Commander", and similar titles. In 1924 it supplemented this system with "service categories", from K-1 (lowest) to K-14 (highest). The service categories essentially operated as ranks in disguise: they indicated the experience and qualifications of a commander. The insignia now denoted the category, not the position of a commander. However, one still had to use functional titles to address commanders, which could become as awkward as "comrade deputy head-of-staff of corps". If one did not know a commander's position, one used one of the possible positions - for example: "Regiment Commander" for K-9. This rank system stayed on for a decade. 1935–1940 On September 22, 1935, the Red Army abandoned service categories and introduced personal ranks. These ranks, however, used a unique mix of functional titles and traditional ranks. For example, the ranks included "Lieutenant" and "Comdiv" (Комдив, Division Commander). Further complications ensued from the functional and categorical ranks for political officers (e.g., "Brigade Commissar", "Army Commissar 2nd Rank"), for technical corps (e.g., "Engineer 3rd Rank",