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At the beginning of [=WW2=], the great engineer (then not yet Sir) Barnes Wallis (played by [[Creator/MichaelRedgrave Redgrave]]) pointed out that bombs rarely did much damage to hardened military installations unless they hit them right on the button (and often not much even then). What you needed was a way of transmitting ALL of the bomb's energy into the target rather than spending most of it on the air. Barnes Wallis proposed that bombs should be designed so that they penetrated the ground AROUND the target rather than hitting it directly, and then went off UNDER it, causing a local earthquake and hole, into which the target would fall. The idea was brilliant and would have worked perfectly, but his initial proposal called for a bomb so large that no aircraft then in existence could carry it and the six-engined "Victory" bomber Wallis designed to do the job would have been little use for anything else and hideously expensive besides, so the Air Ministry were less than enthusiastic.

Finally, when he was allowed to work for the war effort, a targeting committee took him at his word when he said that dams were a good example of a target, and suggested that he take out the main Ruhr dams, at night, when precision bombing would be out of the question, and when the Germans were defending against torpedoes with a series of nets.

Barnes Wallis came up with the idea of making a 5-ton spinning bomb which would skip across the water, hit the dam wall, then sink to the bottom before exploding. Thus the water itself would focus the force of the blast against the dam's wall, in much the same way that a good torpedo hit causes more damage to a ship's hull than would an equivalent amount of explosives in a bomb or artillery shell. These were duly made in a tearing hurry and delivered by a crack team flying Lancasters in pitch darkness 60ft over water, nearly half of whom did not come back. The bombs worked, though the most important dam survived and the impact on the German war effort from destroying the others was somewhat underwhelming.

Having suffered almost 50% losses for disappointing results, the British mothballed the bouncing-bomb concept and never attacked the dams again, letting the Germans rebuild them. Barnes Wallis was allowed to develop his 'earth penetrator' bombs which were staggeringly effective -- taking out bridges and viaducts, sinking the ''Tirpitz'', stopping the V2 and V3 developments, destroying U-boat pens at Brest with 33ft reinforced concrete roofs and in one attack, and blowing up a railway line which ran under a mountain by dropping the bomb THROUGH the mountain and into the tunnel beneath.

Such a weapon would be of inestimable value for precision attack against individual targets of the kind we have had in the many small wars since 1945. So it figures that the British establishment promptly forgot about all the oily rag theory that Barnes Wallis had worked so carefully on, and just kept making airburst bombs which remain inefficient. The British people, on the other hand, remember the astonishing sight of 5-ton bombs bouncing along the surface of a reservoir, and think to this day that that was the whole purpose of the mission.

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At the beginning of [=WW2=], the great engineer (then not yet Sir) Barnes Wallis (played by [[Creator/MichaelRedgrave Redgrave]]) pointed out that bombs rarely did much damage to hardened military installations unless they hit them right on the button (and often not much even then). What you was needed was a way of transmitting ALL of the bomb's energy into the target rather than spending expending most of it on in the air. Barnes Wallis proposed that bombs should be designed so that they penetrated the ground AROUND around the target rather than hitting it directly, and then went off UNDER under it, causing creating a local earthquake and hole, hole into which the target would fall. The idea was brilliant and would have worked perfectly, worked, but his initial proposal called for a bomb so large that no aircraft then in existence could carry it and it; the six-engined "Victory" bomber Wallis designed to do the job would have been little use for anything else and hideously expensive besides, so the Air Ministry were less than enthusiastic.

Finally, Eventually, when he was allowed to work for the war effort, a targeting committee took him at his word when he said that dams were a good example of a target, and suggested that he take out the main Ruhr dams, dams at night, when precision bombing would be out of the question, and when the Germans were defending against torpedoes with a series of nets.

Barnes Wallis came up with the idea of making a 5-ton spinning bomb which would skip across the water, hit the dam wall, then sink to the bottom before exploding. Thus the The water itself would focus the force of the blast against the dam's wall, in much the same way that a good torpedo hit causes more damage to a ship's hull than would an equivalent amount of explosives in a bomb or artillery shell. These The bombs were duly made in a tearing hurry and delivered by a crack team flying Lancasters in pitch darkness 60ft over water, nearly half of whom did not come back. The bombs worked, though the most important dam survived and the impact on the German war effort from destroying the others was somewhat underwhelming.

Having suffered almost 50% losses for disappointing results, the British mothballed the bouncing-bomb concept and never attacked the dams again, letting the Germans rebuild them. Barnes Wallis was allowed to develop his 'earth penetrator' bombs which were staggeringly effective -- taking out bridges and viaducts, sinking the ''Tirpitz'', stopping the V2 and V3 developments, destroying U-boat pens at Brest with 33ft reinforced concrete roofs and in one attack, and blowing up a railway line which ran under a mountain by dropping the bomb THROUGH the mountain and into the tunnel beneath.

Such a weapon would be of inestimable value for precision attack against individual targets of the kind we have had in the many small wars since 1945. So it figures that the British establishment promptly forgot about all the oily rag theory that Barnes Wallis had worked so carefully on, and just kept making airburst bombs which remain inefficient. The British people, on the other hand, remember the astonishing sight of 5-ton bombs bouncing along the surface of a reservoir, and think to this day that that was the whole purpose of the mission.



Paul Brickhill[[note]]famous for living through, and then writing an account of ''Film/TheGreatEscape''[[/note]] wrote a novelised history of 617 Squadron's WWII action, called ''The Dambusters'', they made a movie about it, released in 1954. A remake is planned for [[strike:2010]] [[DevelopmentHell 2011 or maybe 2012]].

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Paul Brickhill[[note]]famous for living through, and then writing an account of ''Film/TheGreatEscape''[[/note]] wrote a novelised history of 617 Squadron's WWII action, called ''The Dambusters'', they Dambusters''. This was later made into a movie about it, released in 1954. A remake is planned for [[strike:2010]] [[DevelopmentHell 2011 or maybe 2012]].



* BarBrawl: A mess room brawl. While waiting for conditions to be perfect for the raid, 617 Sqdn members got teased a lot by the members of other squadrons at RAF Scampton. After Gibson allows them to let off steam, one of these occurs.

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* BarBrawl: A mess room brawl. While waiting for conditions to be perfect for the raid, 617 Sqdn Squadron members got teased a lot by the members of other squadrons at RAF Scampton. After Gibson allows them to let off steam, one of these occurs.



** In recent (as of 2020) screenings on British TV, the dog's name (and the subsequent codeword based on it) are skilfully edited out of the audio. At one point Gibson can be seen saying the real name while the words "my dog" are substituted on the soundtrack.

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** In recent (as of 2020) screenings on British TV, the dog's name (and the subsequent codeword code word based on it) are skilfully skillfully edited out of the audio. At one point Gibson can be seen saying the real name while the words "my dog" are substituted on the soundtrack.
Is there an issue? Send a MessageReason:
Dogs with black fur are not Black people.


* BlackDudeDiesFirst: Gibson's black dog with the [[NWordPrivileges problematic name]] [[spoiler: is run-over half-way through the film, shortly before the crew start the mission. The dog is the only black character in the entire film.]]

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* BlackDudeDiesFirst: Gibson's black dog with the [[NWordPrivileges problematic name]] [[spoiler: is run-over half-way through the film, shortly before the crew start the mission. The dog is the only black character (No one of African descent appears in the entire film.film).]]

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