On 19 April 1944, "Erprobungskommando" 262 was formed at Lechfeld just south of Augsburg, as a test unit ("Jäger Erprobungskommando Thierfelder", commanded by "Hauptmann" Werner Thierfelder) to introduce the Me 262 into service and train a corps of pilots to fly it. On 26 July 1944, Leutnant Alfred Schreiber with the 262 A-1a W.Nr. 130 017 damaged a Mosquito reconnaissance aircraft of No. 540 Squadron RAF PR Squadron, which was allegedly lost in a crash upon landing at an air base in Italy. Other sources state the aircraft was damaged during evasive manoeuvres and escaped.