On 2 April 1945, Major Heinz Lange took up the command of JG 51. He succeeded Major Fritz Losigkeit who took command of JG 77. Command of IV. Gruppe of JG 51 was then passed to Oberleutnant Günther Josten.

By this time the Fw 190 D-9 equipped Stab and IV of JG 51 was based around Berlin, its main task was to protect Luftwaffes few remaining ground-attack aircraft attacking the Red Army trust towards the capital of the Reich. It also flew escort mission for Ju 88 Mistel combinations trying to knock out the Oder bridges.

On 28 April when the Stab./JG 51 was disbanded the Geschwaderkommodore Major Heinz Lange took over the IV gruppen again. By this time the Gruppe included no less than seven Ritterkreutz recipients and flying a mix of Fw 190 As and the Fw 190 D-9 the Gruppe would continue to score hevely over Berlin, claiming no less than 115 enemy aircraft for an own loss of five of their pilots.

This Black Chevron 4 is much of a mystery as it was found at Berlin Gatow airport perhaps one of the machine that was planned to operate from the very hart of Berlin itself, using a stretch of the capitals main East-West Axis roads as a runway. However this finally came to nothing as Hitler personal forbade chopping down the avenue of trees that lined the road sides.

The end for most off the pilots came on 2 May 1945, when Berlin capitulated to the Red Army, the IV./JG 51 was ordered to fly to Flensburg, in Schleswig-Holstein situated in the North close to the Danish border. Here they was to await the arrival of the British and the capitulation to the RAF.

At Flenbsburg the RAF put the german personnel at work, rendering the aircraft unfit to fly. An ignominious end to that hade once been one of the Luftwaffes most successful Jagdgeschwaders.

However this was not the end of flying the Fw 190 Dora, at least not for Major Heinz Lange. As the British wanted to evaluate the performance of the Focke Wulf 190 D-13/R11 "Yellow 10", the earlier machine of the JG 26 Geschwaderkommodore Major Franz Götz.

To test flight this machine it was to be pitted against the RAFs best fighter, the Hawker Tempest. Squadron Leader Evans approached Lange and asked him to fly a mock combat against one of their pilots. Lange accepted, even though he had only ten flights in a Dora.

The mock dogfight was conducted at an altitude of 3,000 meters (9,800 feet), with only enough fuel for the flight and no ammunition. The machines proved evenly matched. Lange assessed that the outcome of such a contest greatly depended on the skills of the individual pilot.

The last flight in the D-13 "Yellow 10" was however made on 25 June 1945 when it was further subjected to mock combat, this time by Oblt. Günther Josten who flew another comparison flight against a Tempest.

Regarding Oblt. Günther Josten, one of the top Fw 190 Dora aces wrote the following in his book "Gefechtsbericht'" when in April he as the Kommandeur of IV./JG 51 scored no less than seven victories in one sortie at the controls of a Fw 190 Dora:

" 25 April 1945. Meanwhile we had taken on charge several Fw 190 D-9 fighters and shot down a lot of enemy planes with them. Just ferrying his machine in Ofw. Marquardt accounted for four Yak-3 fighters alone. On the 25th I achieved a new record for D-9 victories in a single day. On the first sortie I shot down a single Yak 3 and three Il-2s. On the next sortie I was accompanied by Ofw. Rauch. We flew together as a Rotte and downed nine Reds. I got five of them. We firstly ran into 50 Bostons and 30 Airacobras. We both shot down an Airacobra and then I got a Boston and then another to finish. Then we encountered 20 Il-2s and 30 Yak 3s. Rauch finished off two Yak 3s while I shot down two Il-2s for a total of nine victories in two sorties. The following day I added a further Yak 3 to my tally to bring my total number of aerial victories to 178.."