Naval Historywith Dr. Alex

Topic

Signals Intelligence

Related time notes

  1. Operation Sea Lion: How bad could it have gone?
    50:04Signals warning and British fleet concentrationNotable Point
  2. Guadalcanal, HMS Africa, Spy Ships, Metacentric Height & Cruiser build Ticonderoga: 5 in 1 Live
    2:08:34The missing paper trail for British spy shipsChapter
  3. Guadalcanal, HMS Africa, Spy Ships, Metacentric Height & Cruiser build Ticonderoga: 5 in 1 Live
    2:14:55USS Gold Star's radio listening teamNotable Point
  4. Guadalcanal, HMS Africa, Spy Ships, Metacentric Height & Cruiser build Ticonderoga: 5 in 1 Live
    2:15:34The Soviet trawler that followed every carrier groupChapter
  5. Guadalcanal, HMS Africa, Spy Ships, Metacentric Height & Cruiser build Ticonderoga: 5 in 1 Live
    2:18:33Why use a spy ship when every warship can listen?Q&A
  6. Guadalcanal, HMS Africa, Spy Ships, Metacentric Height & Cruiser build Ticonderoga: 5 in 1 Live
    2:24:20Sweden's HSwMS Artemis and mobile listeningChapter
  7. What happens if instead of Gallipoli, Fisher gets Churchill to go for the Baltic? (Patreon)
    1:41:31Night passage, surprise, and German radio trafficChapter
  8. What happens if instead of Gallipoli, Fisher gets Churchill to go for the Baltic? (Patreon)
    1:46:26Why German forces would still reveal activity by radioQ&A
  9. Bruships 253: Science Fiction & Naval History Questions Answered Live...
    3:49:41Perfect communications would not erase Japan's resource deficitQ&A
  10. The Defence Investment Plan is Out... Let's Talk it through, Good, Bad & What the Frigate?
    4:05:01A networked force creates an emissions-control problemNotable Point
  11. Live: What the Royal Navy's Type 83 Will Not Be: AKA Reality of Future Air Dominance System(FADS)
    1:46:02Electronic warfare belongs across the fleetQ&A
  12. Bruships 234: Naval History Questions Answered Live...
    3:55:14Why the thirty-year rule is useful but elasticQ&A
  13. Forging the Kido Butai's Teeth: Imperial Japanese Aircraft Development from Hosho to Pearl Harbor
    25:24Sempill, Mitsubishi, and aviation intelligenceNotable Point
  14. Forging the Kido Butai's Teeth: Imperial Japanese Aircraft Development from Hosho to Pearl Harbor
    29:59Sempill keeps aviation access despite repeated security warningsNotable Point
  15. Operation Deadlight(not Deadbeat)... scuttling U-Boats(Live)
    10:51How Allied escorts intercepted retreating U-boatsNotable Point
  16. Bruships 231: Alternate History & Naval History Questions Answered Live...
    4:08:38Reverse-engineering a Type IX U-boat in 1910Q&A
  17. 3 Books to understand the USN, RN & IJN preperations for WWII! Key Books 3
    49:54Scouting and intercepted orders in Fleet Problem IXNotable Point
  18. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:31:26The Bombe and the search for daily Enigma settingsChapter
  19. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:32:43Delaying a code change to conceal an intelligence successNotable Point
  20. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:33:15Why Enigma decryption gives only part of the intelligence historyNotable Point
  21. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:37:43Traffic patterns can reveal planning and command relationshipsChapter
  22. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:38:54Locating U-boats through their radio transmissionsNotable Point
  23. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:40:26Conflicting warnings before Scharnhorst and Gneisenau sailedNotable Point
  24. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:41:42A misleading callsign question before JutlandNotable Point
  25. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:43:10Combining decrypted content with traffic contextNotable Point
  26. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:45:09Radio silence as a warning before Pearl HarborNotable Point
  27. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:46:51What can a radio's signal characteristics reveal?Q&A
  28. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:47:25Local traffic analysis before Cape MatapanNotable Point
  29. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:48:56An everyday analogy for reading signals and silenceNotable Point
  30. Exploring the meme: Top 5 & Bottom 5 inventions/systems of war that started in British Sheds(Live)
    1:52:30Does childcare experience help explain traffic analysis?Q&A
  31. 36hrs Live Historiophon 2025: P7 of 9 - Supplying Churchill’s Christmas Present: Battle of Cape Bon
    8:13:30Signals intelligence guides the Cape Bon interceptionChapter
  32. 36hrs Live Historiophon 2025: P6 of 9 - The Royal Navy’s Submarine Killers – Black Swans at War
    44:50Submarines listening near the Soviet coastNotable Point
  33. Historiophon 2025: part 3 of 9 - Combat Stress
    4:50:43Enigma, traffic analysis, and the Duisburg convoyChapter
  34. Historiophon 2025: part 3 of 9 - Combat Stress
    4:54:48Reconnaissance flights that concealed codebreakingNotable Point
  35. Bruships 217: Back from Japan 2025: Jetlag is a Myth - Naval History Questions Answered Live...
    2:26:15Why satcom could not precisely reveal the Falklands fleetNotable Point
  36. Bruships 215 On the Road Japan 2025: Naval History Questions Answered Live...
    36:46German codes and British intelligence before JutlandQ&A
  37. Bruships 208: What if Naval History Questions Answered Live...
    3:28:26More Black Swans and the loss of experienced U-boat crewsNotable Point
  38. If Force Z survived... if HMS Prince of Wales & HMS Repulse what would the RN have done with them?
    1:15:20The decisive carrier battle shifts toward the Java SeaChapter
  39. Bruships 206: Naval History Questions Answered Live...
    3:00:42Coastal blackouts concealed targets and exposed signalsQ&A
  40. Fortress Crete: What if the Greek Government had invested in Crete in the 1920s & 30s?
    39:30Axis coordination may prevent an invasionChapter
  41. Scuttlebutt 12: Not Pocket Battleships, No Guadalcanal and a load of Submarine Signals?
    37:49Japanese signals intelligence and the exceptional failure at MidwayQ&A
  42. Pom-Pom or Bofors: Which 40mm do you want?
    1:02:19Failed attacks vanish from air-defense historiesNotable Point
  43. Leadership of the Battle of Midway: When decisions go wrong...
    11:31Intelligence sources and the Midway water ruseChapter
  44. Leadership of the Battle of Midway: When decisions go wrong...
    58:57Radio decoys without dispersing the carrier screenNotable Point
  45. Leadership of the Battle of Midway: When decisions go wrong...
    1:36:33Japanese reconnaissance failed before the carriers metChapter
  46. Battle of Jutland: The Strategic Leadership which both defined it and denied it satisfaction
    37:19Signals intelligence reversed the Dogger Bank ambushChapter
  47. Italian Submarines of WWII: Shackled Potential or Victims of Geography?
    33:16Convoy routing exploited radio traffic before codebreakingNotable Point
  48. Admiral James Somerville: Communicating a Command Apprenticeship
    0:00Somerville's command career began with communicationsChapter
  49. Bruships 182: Naval History Questions Answered Live...
    1:06:26Room 40's mishandled Jutland intelligenceQ&A
  50. Bruships 182: Naval History Questions Answered Live...
    1:07:05Why Scheer used separate shore and sea call signsQ&A
  51. Bruships 175: Pre- Christmas Party 2024
    53:24Why secure codes do not defeat signals traffic analysisNotable Point
  52. Hunting Submarines from WWI to Present Day; How Aircraft, Ships & Submarines Work Together?
    30:18Anti-submarine warfare begins with informationChapter
  53. Anti Submarine Warfare, a primer history & overview
    19:04Q-ships, convoys, escorts, and radio monitoringChapter
  54. Anti Submarine Warfare, a primer history & overview
    1:35:09Submarine communications sacrifice stealth for coordinationChapter
  55. Bruships 172: So the Historiophon Happened...
    1:12:48Why Germany did not recognize the Enigma compromiseQ&A
  56. World of Warships Colab 1, Questions & U Class subs: Second 9 of the 36hr Historiophon Part 2/4
    3:40:31Why a Plan Z fleet sortie strains historical credibilityNotable Point
  57. World of Warships Colab 1, Questions & U Class subs: Second 9 of the 36hr Historiophon Part 2/4
    8:41:49Why Nimitz commanded the Pacific from shoreNotable Point
  58. Kido Butai spotted on december 4th 1941... 3 days before Pearl Harbour, what changes? Patreon 108
    1:14:53Japanese fleet decryption would not provide a quick answerQ&A
  59. Royal Navy Submarines vs Axis Warships: WWII in every theatre, Patreon Premier
    1:07:30Intelligence and Allied command in the Ashigara operationNotable Point
  60. Naval Logistics of the Major Powers in 1939. Patreon Premier
    19:44Why U-boat supply ships mattered so muchNotable Point
  61. Bruships Gothenborg style...
    1:07:17Royal Navy radio direction finding began well before 1939Q&A
  62. Patreon 101: If Lord Fisher died in Jan 1914, how does Prince Louis of Battenberg perform as 1SL?
    2:17:00Jutland with tighter information and command linksChapter
  63. Racking up the Fight Back: American Carrier raids of 1942
    1:14:58Would the US carriers still have fought at Midway?Q&A
  64. Racking up the Fight Back: American Carrier raids of 1942
    4:06:26Pearl Harbor inquiries and the disagreement over KimmelNotable Point
  65. Bruships 136: Some Books & Some Questions Answered
    2:59:40Why a U-boat screen could betray Operation RheinübungQ&A
  66. Beginnings of Naval Aviation & Beginnings of the Year of Aircraft Carriers
    17:07Why a few airships could not watch the North SeaNotable Point
  67. Bruships(New Years Eve): Naval History Questions answered till the Bru runs out!
    50:56German success against Royal Navy codesQ&A
  68. Naval Historian Reacts to Aircraft Carriers the Debate Part 2 of 2
    51:31Escort-carrier patrols and intelligence coverNotable Point
  69. Naval Historian Reacts to Aircraft Carriers the Debate: Part 1 of 2
    58:20Operation C aimed to destroy the Eastern FleetNotable Point
  70. Operation Berlin: Tour De Force or Tour De Farce?
    39:11HX convoy statistics challenge the popular Atlantic narrativeNotable Point
  71. What Happens if 1930s Germany Standardises on the Scharnhorst hull for Capital Ships & Carriers?
    20:34Why the Kriegsmarine remains third in lineNotable Point
  72. Bruships 125: Hutchinsons Pictorial History of the War Series
    17:51Why intercepted signal flags still need interpretationQ&A
  73. Bruships 125: Hutchinsons Pictorial History of the War Series
    27:07Why factory-set radio frequencies helped interceptionQ&A
  74. Bruships 124: Hutchinsons Pictorial History of the War Series
    2:22:03Could a raid on Bletchley Park destroy Allied codebreaking?Q&A
  75. Bruships 124: Hutchinsons Pictorial History of the War Series
    2:32:55Signals intelligence beyond the Enigma storyNotable Point
  76. Bruships 124: Hutchinsons Pictorial History of the War Series
    2:33:53Why some Second World War intelligence secrets may remain lostQ&A
  77. Why WWII evolved Motor Torpedo Boats in Motor Gun Boats: European & Mediteranean theatres
    1:02:43Fairmile D: the heavily armed ambush boatChapter
  78. How & Why during WWII MTBs became MGBs: European & Mediterranean Theatre
    2:20:01The gun-boat solution: outfight the raidersChapter
  79. Battleships of the Treaty Era
    7:34American eavesdropping at the Washington ConferenceNotable Point
  80. Bruships 116: Australia Trip Books... Continued
    2:26:35Axis codebreaking was uneven but consequentialQ&A
  81. Günther Lütjens, useful idiot or misunderstood leadership?
    3:46:36Radio traffic exposed Bismarck after it escaped the cruisersNotable Point
  82. Patreon 79: AH - WW1 incidents happen that bring the US enters war on the side of Germany...
    42:41British cable control exposed German diplomacyNotable Point
  83. Red Storm Rising: The GIUK Gap in a 1980 conventional war between the Warsaw Pact & NATO(Patreon 77)
    4:04:22What can traffic analysis reveal without breaking codes?Q&A
  84. Bruships 109: Mahan, an inspiration & a Reflection + Bonus
    18:15Why traffic analysis matters alongside codebreakingQ&A
  85. Bruships 107: Some New to Me Books & Some New from Pen & Sword
    31:25Revealing Washington Treaty intelligenceQ&A
  86. The Submarine Century? How Submarines evolved over the 20th Century
    1:08:58Wolf packs versus the Atlantic escort systemChapter
  87. If the January 1939 Tsingtao incident leads to war, how does RN carrier force fair against IJN?
    1:30:49Traffic analysis can reveal a fleet before codes are brokenNotable Point
  88. Bruships 99: Political History, Geostrategic History & Naval History
    52:16Why German leaders believed Enigma remained secureQ&A
  89. Escort Carriers, the idea, designs, development and some notable operations
    23:19Escort carriers anchor the Royal Navy's late-war ASW systemChapter
  90. Escort Carriers, the idea, designs, development and some notable operations
    38:01HMS Audacity breaks the Condor reconnaissance chainChapter
  91. 19th Century Cruisers: Comment Response Video 3 (Sfax - Geffion)
    24:13The hidden cost of maintaining a close blockadeNotable Point
  92. Edgar(1890) Class: 19th Century Cruisers Part 10
    55:44HMS Theseus brings German codebooks to Room 40Chapter
  93. Bruships 85: Cruiser, New & Random Reading
    2:07Radio silence during the Bismarck huntQ&A
  94. Bruships 85: Cruiser, New & Random Reading
    27:48Why German communications lessons did not carry into World War IIQ&A
  95. Bruships 85: Cruiser, New & Random Reading
    33:16Why signals traffic can matter more than codebreakingNotable Point
  96. Bruships 85: Cruiser, New & Random Reading
    41:04Why British staffs kept phones and runnersQ&A
  97. Five Weaknesses of Allied/Axis/Minor Navies in 1941 & 1942; Response to some Comments
    55:25Traffic analysis could reveal U-boats without reading EnigmaQ&A
  98. Five Weaknesses of Allied/Axis/Minor Navies in 1941 & 1942; Response to some Comments
    1:01:03Better German communications security required radio silenceQ&A
  99. Major Axis Navies: Five Problems & How to Fix them in January 1942
    19:29British intelligence targeted German industrial bottlenecksChapter
  100. Portland Class: Heavy Cruisers by the Stroke of a Pen?
    40:37Plotting assumptions and ignored distress callsChapter
  101. Bruships 79: Eight New Books, plus Discussions of a Naval Nature
    1:57:25Exposed treaty eavesdropping could collapse the naval settlementQ&A
  102. Patreon 52: Scapa Flow - A History & A Future
    2:01:18How cable infrastructure enabled British signals intelligenceQ&A
  103. Bruships 77: Leadership, books & questions...
    2:01:38Andrew Cunningham's leadership in A Sailor's OdysseyChapter
  104. Patreon 49 - Admiral Kimmel: Not His Failure of Leadership (Long Patrol) #SARCASM ALERT#
    5:40Manning Kimmel's aggressive submarine patrolNotable Point
  105. Patron 49: Admiral Kimmel: A Failure of Leadership? (Live)
    2:13:42What was the difference between Magic and Ultra?Q&A
  106. Bruships 68: Random Naval History Books & Questions
    27:02Why Japan's ambassador could not warn Washington about Pearl HarborQ&A
  107. Nautilus class (Kaiserliche Marine): Long Patrol
    17:18The Åland mine operation undone by intercepted signalsChapter
  108. Bruships: A Special - Questions/What ifs till the Bru runs out? (10)
    2:25:07Naval intelligence without a quick Enigma breakQ&A
  109. Patreon 39:What if Courageous and Glorious had survived?
    1:59:25An Iceland-based carrier against Fw 200 CondorsNotable Point
  110. Patreon 39:What if Courageous and Glorious had survived?
    2:46:46Room 40, Bletchley Park, and German cryptographic confidenceQ&A
  111. Battle of Tassafaronga: 30th of November 1942 - Long Patrol
    49:32Intelligence reveals the run, but victory means different thingsNotable Point
  112. Bruships 61 - Ship Design; Sci-fi, Wooden & Steel, and some Naval History Questions
    27:39Codebreaking did not erase the larger Pacific War imbalanceQ&A
  113. Patreon 37: Interwar RN logistics - The Good, The Bad, and The Singapore
    2:32:56Enigma streamlined convoy defenseQ&A
  114. Chiefs of Staff of the Axis Navies: (Long Patrol) - P12/14: Henning von Holtzendorff
    52:54Delegation, signals, and trust in subordinate commandersNotable Point
  115. Karl Dönitz (on his Birthday) - how capable an Admiral was he?
    2:02:41Why Germany and Japan missed compromised codesQ&A
  116. Karl Dönitz (on his Birthday) - how capable an Admiral was he?
    2:36:10Radio traffic gives wolfpacks awayQ&A
  117. Karl Dönitz (on his Birthday) - how capable an Admiral was he?
    2:41:03Predictable sign-offs weakened naval EnigmaNotable Point
  118. Karl Dönitz (on his Birthday) - how capable an Admiral was he?
    2:46:07Dönitz blamed Italian spies before German signals securityNotable Point
  119. Chiefs of Staff of the Axis Navies: (Long Patrol) - P7/12: Karl Dönitz
    31:06Signals intelligence and the missing code-security responseNotable Point
  120. Chiefs of Staff of the Axis Navies: (Long Patrol) - P7/12: Karl Dönitz
    47:41Dönitz's legacy: U-boat advocate, not broad naval strategistChapter
  121. Shipbuilding trends of the 1880s-1950s: Long Patrol Part 6/11 WWI
    4:00The Dupuy de Lôme name moves from raider to intelligence shipNotable Point
  122. Bruships: A Special - Questions/What If's till the Bru runs out? (5)
    2:20:17The security risk if Germany discovered U-505's captureQ&A
  123. Battle of the Atlantic (Redo): Comment Response
    36:48Wolfpack radio traffic and submarine detectionQ&A
  124. Battle of the Atlantic (Original): Crackpot Schemes or Good Ideas Badly Done p7/7
    11:56Wolfpacks, intelligence, and veteran lossesNotable Point
  125. Bruships: A Special - Questions/What If's till the Bru runs out? (2)
    4:03:35Why Germany missed British radio intelligenceQ&A
  126. The Battle of the Philippine Sea: Live
    2:54:05When did Japan recognize American codebreaking?Q&A
  127. A Book or Two to Review (2): The Life and Letters of David Beatty
    5:04Jutland reports and lost intelligence credibilityNotable Point
  128. Bruships 50: A D-Day special with Questions & some New Books from Pen & Sword
    2:40:20What Enigma traffic revealed before a message was decodedNotable Point
  129. Bruships 50: A D-Day special with Questions & some New Books from Pen & Sword
    3:16:53Could Bismarck have escaped with fuel and radio silence?Q&A
  130. “Coastal Command in the 1920s & 1930s”
    2:17:05How Bletchley Park intelligence reached patrol aircraftQ&A
  131. Dreadnoughts from Around the World (1905-14): Part 4, Questions 1904-7
    16:58Why sustained turbine speed mattered beyond battleNotable Point
  132. William Agnew: Patreon 21, Notable Commanders, Long Patrol Part 3
    9:28Force K and the geography of Axis supplyChapter
  133. William Agnew: Patreon 21, Notable Commanders, Long Patrol Part 3
    15:03Force K's night attack on the Duisburg convoyChapter
  134. Basil Jones: Patreon 21, Notable Commanders, Long Patrol Part 1
    11:22Intelligence and training shape the night engagementChapter
  135. Bruships 46: Accounts of Naval War
    3:36:09Why old personal and intelligence files stay closedQ&A
  136. Patreon 21: Notable WW2 commanders of smaller naval forces
    1:33:26How the Royal Navy found AltmarkQ&A
  137. Crown Colony Class Long Patrol: Part 2 Fiji to Kenya
    22:10HMS Nigeria captures Enigma material from LauenburgChapter
  138. Battles of Dogger Bank: Long Patrol P4/6 1915
    11:50Room 40 turns German radio traffic into warningChapter
  139. Battles of Dogger Bank: Long Patrol P4/6 1915
    17:00A false trawler theory leads into a British ambushNotable Point
  140. The Battles of Dogger Bank 1696-1916
    2:16:55Room 40 enables British force concentrationChapter
  141. The Battles of Dogger Bank 1696-1916
    2:41:31German radio traffic gives away operational patternsNotable Point
  142. The Battles of Dogger Bank 1696-1916
    2:46:42Did German radio habits shape British silence?Q&A
  143. Bruships 29: Best Seller History
    1:25:01Churchill's Secret War and the Dodecanese campaignChapter
  144. Was Pearl Harbour a missed opportunity for the US?
    35:58Japanese code reading and consular intelligenceQ&A
  145. 1930 London Naval Treaty: An Introduction Part 3 of 5/Articles 11-13
    21:05Henry Stimson, preparedness, and codebreakingNotable Point
  146. Bruships 23 - New Book Review
    32:53Naval Enigma required organization and machine capacityNotable Point
  147. Bruships 23 - New Book Review
    34:52Integrated intelligence still faced access restrictionsNotable Point
  148. Four Random Books 8: Churchill
    0:31Churchill's Turkey policy and centralized intelligenceNotable Point
  149. Patreon 7 – How the RN countered E-Boats in the English Channel as proposed by Paul
    1:58:16Headache exploited German radio habitsNotable Point
  150. How the RN countered E-Boats in the English Channel - Patreon 7 Introduction Part 3 of 3
    8:23Battle of Ushant: intelligence and radarChapter
  151. 2 Minutes: Force K's an overview Part 1/2
    1:08How Force K planned to intercept a returning raiderNotable Point
  152. Introduction to Crete 1941
    20:40Enigma intelligence points toward the airfieldsNotable Point
  153. An Introduction to Ships of the Convoy War; the Battle of Atlantic in Steel Part 4 Escort Destroyers
    2:56Why the U-boat threat receded in 1944-45Chapter
  154. An Introduction to Ships of the Convoy War - the Battle of Atlantic in Steel Part 3 Frigates
    2:36The anti-submarine technology race before 1943Chapter