Warming up the engine of a Hungarian Messerschmitt Bf 109

Warming up the engine of V- + 08, a Messerschmitt Bf 109 F-4 of the Hungarian 5/1. Staffel, in preparation for a training flight. The pilot is already sitting in the aircraft, which is parked in a blast pen made of tree trunks. The engine cowling has been painted green. The standard gray camouflage colors begin beneath the cockpit. This picture was made by Fähnrich (Officer Candidate) Gynes, one of the pilot in the Hungarian fighter-bomber squadron who was also an amateur photographer

Source :
  "Luftwaffe im Focus", Spezial No.1 - 2003