Flight Testing The V-1 Pulse Jet Rocket HD Operation Crossbow (1965)

The V-1 flying bomb (German: Vergeltungswaffe 1 "Vengeance Weapon 1"[a]) was an early cruise missile. Its official Reich Aviation Ministry (RLM) designation was Fi 103.[3] It was also known to the Allies as the buzz bomb or doodlebug[4][b] and in Germany as Kirschkern (cherry stone)[c] or Maikäfer (maybug).[d]

The V-1 was the first of the so-called "Vengeance weapons" series (V-weapons or Vergeltungswaffen) deployed for the terror bombing of London. It was developed at Peenemünde Army Research Center in 1939 by the Nazi German Luftwaffe at the beginning of the Second World War, and during initial development was known by the codename "Cherry Stone". Because of its limited range, the thousands of V-1 missiles launched into England were fired from launch facilities along the French (Pas-de-Calais) and Dutch coasts.

The Wehrmacht first launched the V-1s against London on 13 June 1944,[6] one week after (and prompted by) the successful Allied landings in France. At peak, more than one hundred V-1s a day were fired at southeast England, 9,521 in total, decreasing in number as sites were overrun until October 1944, when the last V-1 site in range of Britain was overrun by Allied forces. After this, the Germans directed V-1s at the port of Antwerp and at other targets in Belgium, launching a further 2,448 V-1s. The attacks stopped only a month before the war in Europe ended, when the last launch site in the Low Countries was overrun on 29 March 1945.

As part of operations against the V-1, the British operated an arrangement of air defences, including anti-aircraft guns, barrage balloons, and fighter aircraft, to intercept the bombs before they reached their targets, while the launch sites and underground storage depots became targets for Allied attacks including strategic bombing.[7]

In 1944, a number of tests of this weapon were conducted in Tornio, Finland. According to multiple soldiers, a small "plane"-like bomb with wings fell off a German plane. Another V-1 was launched which flew over the Finnish soldiers' lines. The second bomb suddenly stopped its engine and fell steeply down, exploding and leaving a crater around 20 to 30 metres wide. The V-1 flying bomb was referred by Finnish soldiers as a "Flying Torpedo" due to its resemblance to one from afar
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Operation Crossbow (later re-released as The Great Spy Mission) is a 1965 British spy thriller drama set during Second World War that concerns Operation Crossbow (1943−1945). It was directed by Michael Anderson and stars Sophia Loren, George Peppard, Trevor Howard, John Mills, Richard Johnson, and Tom Courtenay. The screenplay was written by Emeric Pressburger (under the pseudonym "Richard Imrie"), and by Derry Quinn and Ray Rigby, from a story from Duilio Coletti and Vittoriano Petrilli. It was filmed in Panavision at MGM-British Studios.[2]

The film is a fictionalised account of the real-life Operation Crossbow and made with a large cast of popular film stars of the era. It does touch on the main aspects of the operation, which embraced all tactics which were tried to thwart the German long-range weapons programme in the final years of World War II.

The scenes alternate between Nazi Germany’s development of the V-1 flying bomb and V-2 rocket, and the efforts of British Intelligence and its agents to counter those threats. All characters speak in the appropriate language, with English subtitles for those speaking German or Dutch