HUT CHIN SONS PICT O RIAL HISTORY O F THE WAR different. Some of them had walls o f 26-feet-thick reinforced concrete going down 100 feet into the ground and with 26 feet o f roof over the top. Others were tunnels dug deep into the hills o f the Pas dc Calais, with low concrete cupolas protruding. We still did not know exactly what these places were but we suspected that they had something to do with the enemys long- range\\\ apons. Meanwhile the date on which our armies were due to re-enter Europe was coming nearer and nearer. The important thing was to delay the completion of these monsters until our armies were back in France. For that purpose we used Mr. W alliss bomb. It was the only thing which would do damage to 26 feet o f reinforced concrete. Most o f the first o f his bombs were dropped on the sites and they may well have played a much harm and you would not think that it would matter very much even if they did. But if you thought that in the case o f these two canals you would be wrong on both counts. What the bombers did was to break the high embankments which took those canals over low-lying country send the water flooding out over the countryside and leave the barges high and dry. No sooner had the Germans got the banks of the Dortm und-Ems mended than the Americans broke the banks o f theM ittelland which is a sort o f continuation o f the Dortm und-Em s into Central Germany. Then as soon as they started to mend that Bomber Command camc back and broke the Dortm und-Em sat exactly the same place again. That is real strategic bombing. For those two canals play afar larger part in the economic life o f Germany than does any canal in our SECRETS 01' THE LONG-RANGE ROCKET This diagrammatic drawing discloses the secrets of the enemys V2 projectile. From fragments collected and pieced together scientists built up this picture of the rocket— 40 feet long— and its component parts those indicated by numbers being as follows: 1 chain drive to control vanes 2 electric motor 3 burner cups 4 alcohol supply 5 air bottles 0 ring for transport 7. alcohol outlet valve 8 rocket shell construction 9 radio equipment 10 pipe from alcohol tank 11 nose switch for warhead fuse 12 conduit carrying wires 13 central exploder tube :14 electric fuse 15 plywood frame 1(5 nitrogen bottles 17 ring for transport 18 pitch and azimuth gyros 19 alcohol filling point 20 delivery pipe to pump 21 oxygen filling point 22 concertina connections 23 hydrogen peroxide tank 24 frame for turbine and pump 2.3 permanganate tank (gas generator unit behind) 20 oxygen distributor 27 pipes for cooling 28 alcohol inlet 29 electro-hydraulic motors. big part in preventing them from ever coming into Inaction. the event the enemy has launched his V2 rockets at us from mobile firing points sited in the territory which he still holds. A t l he orate f fire and degree o f inaccuracy which he has attained his rockets have been even further away from having any effect on the war than the flying- bombs. They have added a fraction to the number o f Englishmen women and children who have been killed or injured in this long hard war. But that is all. It might have been a different story if the enemy could have got all those installations 011 the Channel coast into operation before we liberated France. Still another new use for the heavy bombers has been found in recent weeks. R.A .F .Bomber Command and the Fortresses and Liberators o f the 8th American Air Force have between them three times breached the Dortm und-Em sand M ittelland Canals. There is something unexpected about a canal as a target for bombing. You would not think that bombs could ado canal 246 affairs. It is not too much to say that to have kepi them dry as we have during these critical weeks before the opening o f the general land inoffensive the west may prove to have ljecn— after oil— the biggest single thing which the strategic bombers have done this autumn. As you will have noticed on the opening day of the offensive the strategic bombers— over a thousand each o f the American heavies and R.A .F .Bomber Command —were called onto give close support to the attacking troops. More especially at this time o f year close- support bombing is an operation which gives rise to serious anxiety. Unless the weather is perfectly clear, which it practically never is in November there must always abe grave fear that some o f the bombs will shortfall amongst our own men. The army commanders are o f course perfectly aware o f this but they attribute so much importance to the support o f the heavy bombers to get their men through the enemy defences without undue loss that they arc willing when circumstances
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