The Kronstadt rebellion was a 1921 insurrection of Soviet sailors, naval infantry, and civilians against the Bolshevik government in the Russian port city of Kronstadt. Located on Kotlin Island in the Gulf of Finland, Kronstadt defended the former capital city, Petrograd, as the base of the Baltic Fleet. For sixteen days in March 1921, rebels in Kronstadt's naval fortress rose in opposition to the Soviet government which they had helped to consolidate. Led by Stepan Petrichenko, it was the last major revolt against Bolshevik rule on Russian territory during the Russian Civil War.
The Workers' and Peasants' Red Army, often shortened to the Red Army, was the army and air force of the Russian Soviet Republic and, from 1922, the Soviet Union. The army was established in January 1918 by a decree of the Council of People's Commissars to oppose the military forces of the new nation's adversaries during the Russian Civil War, especially the various groups collectively known as the White Army. In February 1946, the Red Army was renamed the "Soviet Army". Following the dissolution of the Soviet Union it was split between the post-Soviet states, with its bulk becoming the Russian Ground Forces, commonly considered to be the successor of the Soviet Army.
March 18 is the 77th day of the year in the Gregorian calendar; 288 days remain until the end of the year.