[Note 1] Becker and his radio operator claimed six de Havilland Mosquitos in two weeks, two within three minutes of each other on the night of 23 March 1945.

Gruppe (2nd group) of Nachtjagdgeschwader 11 (NJG 11) based at Erprobungsstelle Rechlin's southern Lärz airbase.

The Sonderkommando Welter was dedicated to performing nocturnal interception with the Messerschmitt Me 262 jet fighter of Royal Air Force (RAF) Mosquitos attacking the Berlin area.

Becker was ordered to take off at approximately 14:30 and vectored by a Jägerleitoffizier (fighter pilot control officer) to a point of intercept.

Becker initially failed to find the P-38 and was already planning to return to Burg when he spotted the P-38 approximately 1,500 meters (4,900 feet) below left in a head-on direction.

Madden managed to bail out and was taken prisoner of war while Becker flew into the debris of the F-5E which damaged his left engine.

Failing to find Münster-Handorf Airfield, Becker made a crash landing in a field, damaging his Me 262 (Werknummer 500075—factory number) further.

Following their bomb run at 21:20, Becker intercepted the Mosquito PF392 in the area of Marienfelde and east of Potsdam at 21:32.

The crew, Warrant Officer Ian Malcom MacPhee and Flight Sergeant Albert Victor Sullivan, were killed in action at Stangenhagen, present-day part of Trebbin.

Jagd-Division (1st Fighter Division) countered this attack with three Me 262s from 10./NJG 11 which claimed two definite and one probable aerial victories, including two by Becker.

692 Squadron which was hit by a 30 mm caliber round in the vertical stabilizer but managed to return to England.

[13] The pilot Flight Lieutenant Andreas Antonius Johannes van Amsterdam is missing in action while Squadron Leader Harry Forbes survived and was taken prisoner of war.

[18] Following World War II, Becker joined the post-war German Air Force, at the time referred to as the Bundesluftwaffe, in 1956 and retired in March 1971.