Los destructores de diques

A very well made film, with a good script, actors and supporting cast. The film recreates the technical problems of the bombs development and squadron training. However, being made so soon after the raid the film ignores the relative lack of impact of the raid on German war production. However, the bravery of the air crews is very well portrayed. Guy Gibson, who was killed later in the war, won a Victoria Cross for his part in the raid and his leadership.

It appears that the attack sequences in The Dam Busters were the direct inspiration for the attack on the Death Star in the first Star Wars film. Some of the dialogue is word-for-word, and it is very interesting to watch these two films back to back.

Also, in the original edit of the film, the dog's name (a black labrador) was a historically accurate but socially unacceptable "Nigger". One edit changed the spoken word to "Trigger," while another release cut all scenes with the offending word. This was unfortunate, because parts of the plot became unintelligible -- the dog's name was one of the code-words used during the attack.

I personally went to school in the town where the Raids were monitored from (Grantham) by Wallis and Harris. There is hardly any memorabilia recording this local fact, and no-one would ever know. I know of RAF Scampton too, which I believe has closed down some years ago. For Lincolnshire, the Dams Raid is remembered poignantly, as the 617 Squadron, who now fly Tornados

in Scotland, was formed and trained there. They practised on the Derwent Reservoir near Sheffield, and the Eyebrook Reservoir in Leicestershire.

Sir Barnes Wallis thought in innovative ways, and the fact that this 'far out' idea of bouncing bombs on a lake, actually breached two dams is an engineering marvel. To do so under heavy flak is beating the odds. Wallis and 617 Squadron collaborated again with the Tallboy and Grand Slam 'earthquake' bombs, which destroyed many important railway viaducts and tunnels, as well as sinking the Tirpitz.

Richard Todd, after the film, moved 3 miles from Grantham. Maybe the film was the reason for this.

The film is one of few about RAF Bomber Command, and is a good portrayal of the danger involved. 41% of crew were killed (55,000). After early 1944, the loss rate rapidly decreased, as the Luftwaffe had been destroyed, so from 1940-3 I would guess 60-70% of crew were killed, for the whole campaign. It may be higher. The RAF didn't even know the Germans had excellent radar until early 1942. The film is about team work and working under stress - your immediate future depended on 6 other people. Many things could go wrong along the way. It is also about strong resilience to new ideas. i.e. The RAF could have had jet planes before 1939 if they'd have developed Whittle's ideas in the 1930s, instead of foolishly waiting 10 whole years until 1941. Whittle was then humiliated after the war by forcing him to give all his designs to the Americans, who didn't waste any time in treating the idea as their own.

When I first saw the film, I thought the special effects were weak and I was astonished a bomb bounced in the first place. When older and seeing it again, you can empathise more with the RAF crews and the skill and daring they would need. It focuses on one story line, and does not have American accents mysteriously appearing from nowhere. I think at the time Guy Gibson was about 25. Imagine yourself having that responsibility at 25.

Many of the 'Upkeep' mines that were bounced, completely missed the targets. Certainly for the Eder dam, there was just one mine left, and was dropped in the right place and destroyed the dam in 'one go'. The film gives the impression many were exploded to breach the dam, but actually a single one did the 'job'.

The Germans are never shown, and I would love to have known what they thought seeing this strange sight of bombs skimming the water's surface. I think Spielberg would have enjoyed making this film, but half of it would have been about the Germans. If the dams had been breached six months earlier, when a water pumping system had not been installed, the Germans would have been seriously up the creek with no paddles. The Ruhr Industry would have been unable to function at all. Do not underestimate what hypothetical difference the dams breach could have made to the Germans in their biggest industrial area.

Do women enjoy the film too, or is all the technical wizardry just for the male audience?

Why did Pink Floyd use it in their film 'The Wall'? Carling Black Label used the lake scenes many times in notorious adverts.

Just like to respond to Howard Morley's comments. The dam's raids were urgently needed, and it took only a few months to form 617, train them and attack the dams. Quite a feat I'm sure you'll agree. The film nicely conveys the struggles and the friendships of the crews, put together from the best of the Commonwealth fliers. Even if the screenplay does take some rather large liberties with the story.

As to Guy, he was killed in 1944 on his way back from acting as Master Bomber on a raid over Germany. His Mosquito crashed in Holland, killing him and his navigator. To this day there are no explanations for the crash. Guy should not have been flying at all, but he was so desperate to get back in the air that Bomber Harris gave in and let him. A tragedy. Of the crew of G-George (Guy's ship on the raid) none of them survived the war. The crew crashed whilst trying to bomb the Dortmund-Ems canal later in 1943.

The film is a fitting tribute to the raid, and the massive losses of 617. Of the 19 ships to go out, 11 came back. Of the 77 crew lost on the raid, only 1 survived. This is why the dams were not bombed again. And the problem with the Sorpe was that it was an earth damn, the bombs were not very effective as with the Eder and Moehne.

How do I know all this? My Great-grandmother was a Gibson.

Watch the film and marvel.

In the spring of 1942, the English design engineer, Barnes Wallis, is working on a revolutionary new bomb, capable of breaching Germany's hydro-electric dams. This film, with its unforgettable "Dam Busters March" by Eric Coates, recounts the story of the development of the bomb and the devising of special tactics for attacking Germany's industrial heartland. It is also a tribute to the genius of Wallis and the courage and skill of the men who made the concept work.

The great dams of western Germany, harnessing the energy of the rivers Moehne, Eder and Sorbe, were an important power source for the Nazi war effort. If the dams could be breached, then the loss of electrical energy and the collateral flooding would, it was hoped, cripple German industry and shorten the war.

As the film opens, Wallis is pondering the one central problem associated with bombing a dam. Any explosion in the water (and direct hits on the dam wall are too much to expect) is cushioned by the fluidity, and no structural damage results.

We see Wallis eagerly experimenting in his back yard, surrounded and assisted by his adoring children. His brilliant idea is this - if a bomb can be delivered at the correct shallow trajectory and the right high speed, it will 'skip' along the lake's surface like a pebble on a pond, strike the dam and slide down the wall. A depth-sensitive trigger could then detonate the bomb where it would do maximum damage.

The idea is a daring and imaginative one, and predictably enough, the various government departments are slow to see its merit. Wallis spends many disheartening hours waiting to speak to unsympathetic civil servants. In a lovely piece of ironic humour, a Whitehall mandarin points out to Wallis the difficulties inherent in obtaining a Wellington bomber for tests, and Wallis quietly suggests that his own role as the creator of the Wellington might be of some assistance.

Wallis is constantly being told that resources are scarce, that the communal effort requires sacrifices, and so forth. There is, he is told, "a very thin dividing line between inspiration and obsession". However, the eccentric genius persists, and eventually Churchill gets to hear of the idea. From that moment on, the project gathers momentum. 'Bomber' Harris, the chief of Britain's Bomber Command, sets up trials. The 'bouncing bomb' is at last a reality.

Major disappointments accompany the trials. The casing of the bomb has to be drastically re-designed, and it transpires that the aircraft will need to approach the dam considerably lower and faster than had been envisaged. The RAF's standard altimeters are useless at heights of 50 feet, and the resulting danger to crews of flying blind at almost zero altitude are unacceptable.

At this point, Commander Guy Gibson, the pilot who will lead the raid, has his own flash of inspiration. The spotlights in a variety theatre give him the idea of two converging light beams, shining downwards from aircraft to water, which will fix the plane's altitude precisely. If this all sounds a little 'Heath Robinson', it is nothing compared to the viewing gadget which is cobbled together to enable crews to align on the twin towers of the dam.

The climax of the film, the actual attack on the German dams, is rather a disappointment. Anti-aircraft tracer coming up from the German defenders is superimposed on the photographic matrix in the most amateurish of ways. The sound of the ground batteries is unrealistic, staying at a constant pitch and volume however the aircraft manoeuvre. The explosions are the poorest efforts of all, being no more than scraps of film and drawings, patched unconvincingly onto shots of a model dam.

Michael Redgrave does a commendable job of 'creating' Barnes Wallis for the screen, quintessentially English and understated, with his runner beans and his cricket jokes. The man's boyish enthusiasm comes across. In this respect the bathtub in the yard, the setting for his primitive experiments, serves two cinematic purposes, showing us the simple, unprepossessing genius of the English people, and explaining in visual terms exactly how the bomb will work.

Good use is made of genuine Air Ministry film of the bouncing bomb tests. If the ultimate effect on Germany's war capacity is exaggerated, this can be forgiven.

Richard Todd is terrific as Gibson, the tough little leader of the mission, the emotional man who is able through intense self-discipline to keep his feelings in check and do his duty. The powerful ending is almost too much to take, with the empty seats in the officers' mess, and Todd striding off in stiff-upper-lip fashion to 'write a few letters'. No English heart can fail to be stirred by that marvellous theme tune.