In 1921, a group of naval officers and men, together with soldiers and civilian supporters, rebelled against the Bolshevik government in Soviet Kronstadt. The garrison had previously been a centre of major support for the Bolsheviks, and throughout the Civil War of 1917–1921, the naval forces at Kronstadt had been at the vanguard of the main Bolshevik attacks. Their demands included freedom of speech, the end of deportation to work camps, a change in Soviet war politics, and liberation of the soviets (workers' councils) from "party control". After brief negotiations, Leon Trotsky (then the Minister of War in the Soviet Government, and the leader of the Red Army) responded by sending the army to Kronstadt, along with the Cheka. The uprising was thus suppressed following a massacre.