On 20 June 1942, Sergeant Moschonas flew his final operation. That day, Bristol Beaufort DD959 (Squadron code 'Q') was assigned to strike a reported Axis convoy south of Cape Spartivento, Italy. The aircraft, piloted by Flying Officer Frank John Robert Thomond Minster, carried a crew of four: Sgt. Joseph A. Bowyer (observer), Sgt. Walter A. R. King (wireless operator), and Sgt. John Moschonas (wireless operator/air gunner).[5] Records indicate that the mission was likely aborted—possibly due to weather or convoy movement—and the aircraft turned back toward Malta. En route home, Beaufort DD959 was intercepted and shot down by a German Junkers Ju 88C heavy fighter from I./Nachtjagdgeschwader 2 (NJG 2), which was operating long-range interception missions from southern Italy. The Ju 88C was flown by Feldwebel Heinz Rökker, later one of the Luftwaffe’s top-scoring night fighter aces.[6] The Beaufort went down in the Ionian Sea. All four crewmen were killed. Their bodies were never recovered. Sergeant Moschonas is officially listed as "Missing, Presumed Killed", and his name is inscribed on Column 262 of the Alamein Memorial in Egypt, which honors members of the Commonwealth air forces who fell in the Middle East and have no known grave.[7]

Postwar Uncertainty and the Nordhausen Photograph (1945–1955)

For more than a decade after his presumed death, uncertainty surrounded John Moschonas’s fate. In April 1945, a photograph of two emaciated prisoners taken at the Nordhausen concentration camp appeared in The Times and other Allied publications. The Moschonas family believed that one of the men bore a striking resemblance to John. This led to an extensive investigation across British and international agencies.[8] John’s brother, Harry A. Moschonas, spearheaded a campaign to trace his brother, contacting the British Red Cross, the Air Ministry, the Control Commission for Germany, and even the Prime Minister. The Red Cross acknowledged the widespread belief that the man pictured could be John and opened a full case file. One British official even remarked, “I expect the next thing will be the King and Queen,” noting the family’s determined efforts.[9] An RAF officer had previously written that he believed he had met "Johnnie Moscona" in Campo 66, a POW camp in Capua, Italy, where they shared Red Cross parcels. The theory was that John had survived the shootdown, was captured, moved through the Italian camp system, and ultimately ended up in Nordhausen.[10] But by 1946–1947, multiple agencies, including the U.S. Army Signal Corps and British Control Commission, confirmed that the man in the photo was not John. Officials established that no patients from Nordhausen were transferred to hospitals under Allied control, and no records placed Sgt. Moschonas in the German camp system. His name never appeared in any prisoner rolls or ICRC postwar repatriation lists.[11] The family continued to pursue the case well into the 1950s. A final letter dated February 1955 from the British Red Cross stated that “it would be a complete waste of time” for the family to pursue travel to Germany and gently reaffirmed that John Moschonas must be considered killed in action on 20 June 1942.[12]

His death reverberated in the Greek community of London and in Greece itself. Some Greek biographical sources, referencing his sacrifice, erroneously claimed he died during the Battle of Britain in 1940; in truth, he died in June 1942, flying offensive operations from Malta—a theater no less critical or dangerous. His heritage, combining two proud traditions—British service and Hellenic patriotism—stands as a testament to the role of diaspora Greeks in the Allied war effort. Sergeant John Moschonas was just nineteen years old when he gave his life. His sacrifice is commemorated not only in Commonwealth war records but in the oral and written traditions of Greek diaspora families, who remember him as a young man of valor and legacy, carrying the name Moschonas into battle.