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355:"Bomb, H.E., Aircraft, J.W., 400lb" (the "Johnnie Walker" bomb) - Upon entering the water the bomb was expected to dive underwater then surface. This would be repeated until it struck the relatively less protected underside of a ship at which point the 90 lb (41 kg)
201:, MIR(C) instead (in November 1940) became a department in the Ministry of Defence; effectively under the wing of the Prime Minister who was the Minister of Defence. As First Lord of the Treasury as well, Churchill could provide funds. Churchill,
209:(Churchill's chief scientific and military advisors respectively) would protect MD1 from the Ministry of Supply and the Ordnance Board whose areas they encroached on. The Ministry of Supply carried out the necessary administration of MD1 but the
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W bomb - A sub-surface floating delayed activation contact mine for use against river traffic and structures. Designed to disrupt merchant shipping on the Rhine, 1,700 were deployed destroying bridges and
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with the result that it was disbanded. Macrae felt this was an act of revenge by those who had opposed it and
Professor Lindemann. Production machinery went to the
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who continued as
Assistant Director and senior civilian member of the staff throughout the war. Following an air raid, a large country house
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that launched a 2.5 lb (1.1 kg) shaped charge bomb using a powerful spring and a cartridge on the tail of the projectile.
101:(MD1), also known as "Churchill's Toyshop", was a British weapon research and development organisation of the Second World War.
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warhead would explode. The mine would self detonate if its propellent (compressed hydrogen) ran out before it struck something.
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and explosives expert, with experience in India, as GSO2 to head MIR(c) a division of MIR that was to develop weapons for
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Beehive charge – a shaped charge with guide rods to ensure correct distancing. Named for the characteristic shape.
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which aimed to disrupt German shipping in their inland waterways by dropping these mines into the river at
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started in a room at the War Office, Macrae initially secured offices and workshop space at IBC, owners of
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Clam - miniature version of Limpet mine; a small magnetic charge, detonated by an L-Delay or Time Pencil.
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covered in a powerful adhesive. It was intended to stick to the target vehicle before exploding.
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at
Westcott effectively for scrapping. Jefferis received an appointment to the Pakistan Army.
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With the end of the war and the removal of
Churchill from office, MD1 was taken over by the
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The
Ministry of Ungentlemanly Warfare: Churchill's Mavericks: Plotting Hitler's Defeat
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was in control. Jefferis was promoted to
Lieutenant-Colonel and Macrae to Major.
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MD1 began in "Military
Intelligence Research" (MIR). MIR was a department of the
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M Mine – anti-personnel weapon in a cardboard body; detonated when trodden on.
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was engaged in developing the floating mine required for
Churchill's planned
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Churchill lobbied for recognition of
Jefferis, suggesting promotion.
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Squawker acoustic decoy - developed by
Lieutenant-Colonel Brinsmead.
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near Aylesbury in Buckinghamshire close to the Prime Minister at
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331:("Switch No. 9") - a more precise timer using the mechanical
27:"MD-1" redirects here. For the congressional district, see
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Churchill's Secret Weapons: the story of Hobart's Funnies
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When MIR was combined with other activities to form the
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Military research establishments of the United Kingdom
348:"AP Switch" - an anti-personnel weapon based on a
352:rifle cartridge and a pressure-sensitive trigger.
370:Directorate of Miscellaneous Weapons Development
220:who was brought in after his privately invented
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545:World War II weapons of the United Kingdom
231:and the Weapons research establishment at
86:Learn how and when to remove this message
130:set up in 1939 under Lt-Col Joe Holland
49:This article includes a list of general
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224:was taken on for official development.
29:Maryland's 1st congressional district
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55:it lacks sufficient corresponding
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499:The Mills Grenade Collectors site
325:. Also referred to as "Switches".
535:Toxicology in the United Kingdom
530:Research institutes in Wiltshire
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237:Rocket Propulsion Establishment
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317:designed to be connected to a
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418:Delaforce, Patrick (2006) .
216:Other staff at MD1 included
199:Special Operations Executive
495:"Stuart Macrae's "Toy Box""
445:Winston Churchill's Toyshop
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339:alloy for its operation.
279:attached to a target by
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185:Operation Royal Marine
99:Ministry of Defence 1
265:weapon based on the
18:Johnny Walker (bomb)
448:. Roundwood Press.
321:or short length of
203:Professor Lindemann
112:, former editor of
540:Weapon development
458:. SBN 900093-22-6.
229:Ministry of Supply
479:978-1-444-79895-1
399:"Village History"
329:Lead Delay Switch
140:irregular warfare
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323:safety fuse
311:Time pencil
273:Limpet mine
249:Sticky bomb
211:War Cabinet
175:During the
144:limpet mine
68:introducing
519:Categories
386:References
380:Station IX
294:Puff Ball.
277:naval mine
243:Inventions
189:Strasbourg
177:phoney war
166:Whitchurch
128:War Office
118:magazine.
51:references
350:.303 inch
319:detonator
313:- a time
263:anti-tank
466:(2016).
442:(1971).
405:18 April
364:See also
170:Chequers
162:The Firs
504:28 July
289:mollusc
281:magnets
122:History
64:improve
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357:Torpex
298:ships.
285:limpet
181:MIR(c)
150:MIR(c)
136:sapper
53:, but
335:of a
333:creep
506:2011
474:ISBN
450:ISBN
426:ISBN
407:2019
337:lead
315:fuse
259:PIAT
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