During the October Revolution of 1917, the crew of "Oleg" quickly declared support for the Bolshevik cause. The Treaty of Brest-Litovsk required the Soviets to evacuate their base at Helsinki in March 1918 or have their ships interned by newly independent Finland even though the Gulf of Finland was still frozen over. "Oleg" sailed to Kronstadt in what became known as the 'Ice Voyage'. In November 1918, "Oleg" and "Bogatyr" participated in the aborted invasion of Estonia by the Red Army. "Oleg" was torpedoed and sunk on the night of 17 June 1919 by Royal Navy speedboat "CMB-4" commanded by Captain Augustus Agar in an attack on the Red Navy facilities at Kronstadt. Parts of the ship were salvaged in 1919 and 1933, and the rest of hulk was raised and scrapped in 1938.