Operational History
The Yer-2 was not in squadron service when Germany invaded on 22 June 1941, but the 420th and 421st Long-Range Bomber Regiments (Russian: Dahl'niy Bombardirovchnyy Aviapolk—DBAP) were formed shortly afterwards. However neither regiment flew any operational missions until later in the summer. On the evening of 10 August Yer-2s of the 420th DBAP, accompanied by Petlyakov Pe-8s of the 432nd DBAP, attempted to bomb Berlin from Pushkino Airfield near Leningrad. The airfield was too short to accommodate a fully loaded Yer-2, but three bombers did manage to take-off regardless. Two managed to bomb Berlin, or its outskirts, but only one successfully returned; the other was shot down by 'friendly' Polikarpov I-16s when it reentered Soviet airspace and the third aircraft went missing. Three crews from the 420th DBAP bombed Königsberg during the nights of 28–29 August and 30 August–1 September from Ramenskoye Airport, southeast of Moscow.
On 1 October 1941 sixty-three Yer-2s were in service, but only thirty-four were operational. The 420th DBAP had flown 154 sorties by the beginning of November (6 in August, 81 in September, 67 in October) and had lost thirty of its forty aircraft. Over half of these (nineteen) were due to non-combat losses. Losses were extremely high over the autumn and winter as they were inappropriately committed against German tactical front-line targets during the Battle of Moscow at low altitudes and only twelve were in service on 18 March 1942. On 4 August 1942 the 747th DBAP had only ten Yer-2s on hand and it was briefly committed during the Battle of Stalingrad. The survivors were flown, in ever dwindling numbers, until August 1943 when the last few aircraft were transferred to schools by the 2nd Guards DBAP and the 747th DBAP.
The Yer-2 was placed back into production at the end of 1943, but none of the new bombers had been issued to combat units by 1 June 1944. However forty-two were in service on 1 January 1945 and one hundred and one on 10 May 1945 after the war ended. The first combat mission undertaken by Yer-2s after they returned to production was a raid on Königsberg on 7 April 1945 by the 327th and 329th Bomber Aviation Regiments (Russian: Bombardirovchnyy Aviatsionyy Polk). It remained in service with Long-Range Aviation units until replaced by four-engined bombers like the Tupolev Tu-4 in the late 1940s.
Read more about this topic: Yermolayev Yer-2
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