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Bletchley Park: Copyedit (minor)
[td][/td] [td][[File:Enigma Decoder Machine.jpg|thumb|upright=.75|{{center|Photograph of a German Enigma coding machine}}]][/td]
[td][[File:Enigma Decoder Machine.jpg|thumb|upright=.75|{{center|Photograph of a German Enigma coding machine}}]][/td] [td]The British [[Government Code and Cypher School]] (GC&CS) based at [[Bletchley Park]] housed a small industry of code-breakers and [[Traffic analysis|traffic analysts]]. By June 1941, the German [[Enigma machine|Enigma]] machine Home Waters ({{lang|de|Heimish}}) settings used by surface ships and U-boats could quickly be read. On 1 February 1942, the Enigma machines used in U-boats in the Atlantic and Mediterranean were changed but German ships and the U-boats in Arctic waters continued with the older {{lang|de|Heimish}} (''Hydra'' from 1942, Dolphin to the British). By mid-1941, British [[Y-stations]] were able to receive and read ''[[Luftwaffe]]'' [[Wireless telegraphy|W/T]] transmissions and give advance warning of ''Luftwaffe'' operations. {{sfn|Macksey|2004|pp=141β142}}{{sfn|Hinsley|1994|pp=141, 145β146}}[/td]
[td]The British [[Government Code and Cypher School]] (GC&CS) based at [[Bletchley Park]] housed a small industry of code-breakers and [[Traffic analysis|traffic analysts]]. By June 1941, the German [[Enigma machine|Enigma]] machine Home Waters ({{lang|de|Heimish}}) settings used by surface ships and U-boats could quickly be read. On 1 February 1942, the Enigma machines used in U-boats in the Atlantic and Mediterranean were changed but German ships and the U-boats in Arctic waters continued with the older {{lang|de|Heimish}} (''Hydra'' from 1942, Dolphin to the British). By mid-1941, British [[Y-stations]] were able to receive and read ''[[Luftwaffe]]'' [[Wireless telegraphy|W/T]] transmissions and give advance warning of ''Luftwaffe'' operations. In 1941, naval ''Headache'' personnel, with receivers to eavesdrop on ''Luftwaffe'' wireless transmissions, were embarked on warships. {{sfnm|1a1=Macksey|1y=2004|1pp=141β142|2a1=Hinsley|2y=1994|2pp=141, 145β146}}[/td] [td][/td] [td]In 1941, naval ''Headache'' personnel, with receivers to eavesdrop on ''Luftwaffe'' wireless transmissions, were embarked on warships and from May 1942, ships gained RAF Y ''computor'' parties, which sailed with cruiser admirals in command of convoy escorts, to interpret ''Luftwaffe'' W/T signals intercepted by the Headaches. The Admiralty sent details of ''Luftwaffe'' wireless frequencies, call signs and the daily local codes to the computors, which combined with their knowledge of ''Luftwaffe'' procedures, could glean fairly accurate details of German reconnaissance sorties. Sometimes computors predicted attacks twenty minutes before they were detected by radar.{{sfnm|1a1=Macksey|1y=2004|1pp=141β142|2a1=Hinsley|2y=1994|2pp=141, 145β146}}[/td] [td][/td]
[td][/td] [td]====B-Dienst====[/td]
[td]====B-Dienst====[/td]
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[td][/td]Revision as of 16:39, 3 September 2025
[/td][td][/td] [td][[File:Enigma Decoder Machine.jpg|thumb|upright=.75|{{center|Photograph of a German Enigma coding machine}}]][/td]
[td][[File:Enigma Decoder Machine.jpg|thumb|upright=.75|{{center|Photograph of a German Enigma coding machine}}]][/td] [td]The British [[Government Code and Cypher School]] (GC&CS) based at [[Bletchley Park]] housed a small industry of code-breakers and [[Traffic analysis|traffic analysts]]. By June 1941, the German [[Enigma machine|Enigma]] machine Home Waters ({{lang|de|Heimish}}) settings used by surface ships and U-boats could quickly be read. On 1 February 1942, the Enigma machines used in U-boats in the Atlantic and Mediterranean were changed but German ships and the U-boats in Arctic waters continued with the older {{lang|de|Heimish}} (''Hydra'' from 1942, Dolphin to the British). By mid-1941, British [[Y-stations]] were able to receive and read ''[[Luftwaffe]]'' [[Wireless telegraphy|W/T]] transmissions and give advance warning of ''Luftwaffe'' operations. {{sfn|Macksey|2004|pp=141β142}}{{sfn|Hinsley|1994|pp=141, 145β146}}[/td]
[td]The British [[Government Code and Cypher School]] (GC&CS) based at [[Bletchley Park]] housed a small industry of code-breakers and [[Traffic analysis|traffic analysts]]. By June 1941, the German [[Enigma machine|Enigma]] machine Home Waters ({{lang|de|Heimish}}) settings used by surface ships and U-boats could quickly be read. On 1 February 1942, the Enigma machines used in U-boats in the Atlantic and Mediterranean were changed but German ships and the U-boats in Arctic waters continued with the older {{lang|de|Heimish}} (''Hydra'' from 1942, Dolphin to the British). By mid-1941, British [[Y-stations]] were able to receive and read ''[[Luftwaffe]]'' [[Wireless telegraphy|W/T]] transmissions and give advance warning of ''Luftwaffe'' operations. In 1941, naval ''Headache'' personnel, with receivers to eavesdrop on ''Luftwaffe'' wireless transmissions, were embarked on warships. {{sfnm|1a1=Macksey|1y=2004|1pp=141β142|2a1=Hinsley|2y=1994|2pp=141, 145β146}}[/td] [td][/td] [td]In 1941, naval ''Headache'' personnel, with receivers to eavesdrop on ''Luftwaffe'' wireless transmissions, were embarked on warships and from May 1942, ships gained RAF Y ''computor'' parties, which sailed with cruiser admirals in command of convoy escorts, to interpret ''Luftwaffe'' W/T signals intercepted by the Headaches. The Admiralty sent details of ''Luftwaffe'' wireless frequencies, call signs and the daily local codes to the computors, which combined with their knowledge of ''Luftwaffe'' procedures, could glean fairly accurate details of German reconnaissance sorties. Sometimes computors predicted attacks twenty minutes before they were detected by radar.{{sfnm|1a1=Macksey|1y=2004|1pp=141β142|2a1=Hinsley|2y=1994|2pp=141, 145β146}}[/td] [td][/td]
[td][/td] [td]====B-Dienst====[/td]
[td]====B-Dienst====[/td]
Continue reading...
