Сколько Украинских фронтов существовало в годы Второй Мировой войны?
The territorial principle of manning the Red Army was introduced in the mid-1920s. In each region able-bodied men were called up for a limited period of active duty in a territorial unit, which comprised about half the Army's strength, each year, for five years. The first call-up period was for three months, with one month a year thereafter. A regular cadre provided a stable nucleus. By 1925 this system provided 46 of the 77 infantry divisions and one of the eleven cavalry divisions. The remainder consisted of regular officers and enlisted personnel serving two-year stints. The territorial system was finally abolished, with all remaining formations converted to the other 'cadre' divisions, in 1937 and 1938.
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