He escaped from in March 1919 Petrograd via Finland and joined Admiral Kolchak, who gave him the rank of rear admiral and assigned him command the White Movement naval forces at Vladivostok. On 31 January 1920, he took his remaining vessels and numerous refugees to Tsuruga in Japan. In August 1920 he arrived at Sevastopol in the Crimea and joined General Wrangel'sArmed Forces of South Russia. He was assigned command of the fortress of Kerch in September 1920, patrolling the Sea of Azov and the Black Sea. With the collapse of the White Movement, he evacuated his forces with Wrangel's fleet to Bizerte in French Tunisia. He commanded the Russian fleet in exile from January 1921 until its disarmament, after the recognition by France of the Soviet Union on October 29, 1924.
Admiral Berens (third from left) at Bizerte, 1921.
Remaining in Tunis, he worked in the agricultural sector and participated actively in the affairs of the local Department of Navy Union. He died in Tunis in 1943 and was buried at the cemetery in Megrin. His ashes were transferred to the Borzhel cemetery in Tunisia on April 30, 2001.