Video
Patreon 58: Ruse de Guerre or Deception, disguises and decoys in naval warfare
Study Patreon 58: Ruse de Guerre or Deception, disguises and decoys in naval warfare, a Dr. Alex Clarke video from 21 Jul 2022, with 70 time notes. Topics include Age Of Sail, Commerce Raiding, Electronic Warfare.
Time notes
- 9:32Salamis turns Persian numbers into congestionChapter
The Greek retreat into confined water induces the larger Persian fleet to enter a channel where its numerical advantage cannot deploy.
- 11:57QuestionDo deceptive naval-treaty manoeuvres count as ruse de guerre?AnswerQ&A
No; they are better understood as diplomatic ruses rather than ruses of war.
- 12:14Paint and maintenance complicated age-of-sail identificationNotable Point
Flexible paint schemes and the practical need to protect wooden hulls made national appearance an imperfect guide to a sailing ship's identity.
- 13:30QuestionWhy did the Persians not move embarked troops forward to reinforce the ships fighting at Salamis?AnswerQ&A
The congested fleet made that transfer extremely difficult, and Persia did not manage to feed those troops into the fighting front.
- 13:45Merchant gunports could conceal a manpower weaknessNotable Point
Real gunports and carronades could make a merchantman look formidable, but its smaller crew sharply limited how much of that apparent fighting power it could use.
- 14:56The honor of a ruse depends on who tells the storyNotable Point
Successful deception is often praised by the victor and condemned by the defeated, making later judgments about chivalry inseparable from perspective.
- 16:26Ancient generalship expected stratagemsNotable Point
Greek ideas of command included stratagem, complicating the stereotype that ancient armies merely formed orderly ranks and pushed straight ahead.
- 17:16What makes a naval ruse legitimateChapter
The framework defines ruse de guerre, distinguishes lawful deception from prohibited conduct, and explains why uncertainty forces commanders to spend scarce resources.
- 21:44QuestionHow could the Persians have avoided defeat at Salamis?AnswerQ&A
Use fire ships to force the Greeks out of the confined position, then wait outside rather than entering the trap.
- 25:18QuestionWhy can a tactic such as deliberately seeking stalemate make strategic sense?AnswerQ&A
Because the opponent may be pursuing a different end goal, so behavior that looks irrational under your objective can be rational under theirs.
- 28:46Black Bart challenges navies and chartered companiesChapter
Bartholomew Roberts captures hundreds of vessels and even company warships, prompting both Britain and France to pursue a pirate force operating at near-naval scale.
- 32:22Pirate speed depended on careening and illicit supplyNotable Point
Roberts uses Cape Lopez to clean and repair his hulls while a merchant supplier provides the rope, canvas, tar, food, drink, and timber that independent raiders could not produce themselves.
- 33:58HMS Swallow lures Black Bart's squadron apartChapter
Captain Chaloner Ogle disguises HMS Swallow as a clumsy Portuguese merchantman, isolates a pirate consort, and returns behind the captured vessel to surprise Bartholomew Roberts.
- 39:56Accounts disagree over Black Bart's burialNotable Point
Bartholomew Roberts was buried at sea in his finery, but accounts differ over whether Ogle permitted the rite or the pirates completed it during the action.
- 40:55Cape Lopez ends in execution, servitude, and re-enslavementNotable Point
The captured pirate crew meets sharply different fates, including execution, imprisonment, company servitude, acquittal through coercion claims, and the re-enslavement of Africans whom Roberts had freed.
- 43:57QuestionDid Roberts's pirates slow down to avenge their captain, or were they unable to escape because the wind failed?AnswerQ&A
Being becalmed is more likely, although the story of a deliberate last stand sounds more heroic.
- 44:51QuestionDid switching Bismarck and Prinz Eugen's positions before the Denmark Strait action count as a ruse de guerre?AnswerQ&A
Yes; it was designed to confuse British identification, although it did not work very well.
- 45:13QuestionHow was Captain Hill treated after trading with Roberts's pirates?AnswerQ&A
He could get away with profiting from the trade so long as he did not personally cross into piracy.
- 47:16QuestionWere there diplomatic consequences for warships using another country's flag as a ruse?AnswerQ&A
Usually little, because intent was difficult to prove; in Ogle's case the Portuguese flag and ship-handling plainly suggest a planned deception.
- 50:18The China Fleet carries immense value with one brig for escortChapter
Twenty-nine merchantmen carrying extraordinarily valuable Far Eastern trade face a French ship of the line and escorts with only the company brig Ganges as a purpose-built warship.
- 55:35Pulo Aura builds on earlier convoy bluffsNotable Point
Paint, carpentry, blue ensigns, and frigate-style signal repeating draw on East Indiaman deceptions that had already deterred French and Franco-Spanish squadrons in 1797 and 1799.
- 58:08Pulo Aura: merchantmen bluff a French squadronChapter
Nathaniel Dance makes armed East Indiamen look and behave like a Royal Navy battle line, then attacks and chases a stronger French squadron until it withdraws.
- 1:10:50Pulo Aura's bluff risked merchant hulls and cargoNotable Point
Dance's leading ships were cargo-laden merchantmen with lighter construction and at most 36 18-pounders each, yet they chased a French 74 and its escorts.
- 1:12:18Master and Commander visualizes a full ship disguiseNotable Point
A film example shows how paint, canvas, patched sails, deck clutter, smoke, a reduced visible crew, and a plausible Portuguese identity combine to turn a warship into apparent prey.
- 1:15:45QuestionWere Dance's leading East Indiamen meant to sacrifice themselves so the rest of the convoy could escape?AnswerQ&A
No; although they could have become a screen if necessary, Dance intended their aggressive bluff to drive the French squadron off.
- 1:20:06QuestionWere East Indiamen generally faster than warships?AnswerQ&A
No; warships were often faster because of coppered hulls, larger sail-handling crews, more canvas, and the merchantmen's heavy cargo loads.
- 1:22:19Historians are trained to test biased sourcesNotable Point
The defense of historical training centers on recognizing partial, deceptive, or self-serving evidence rather than accepting a source at face value.
- 1:25:07Warren reverses the Pulo Aura disguiseChapter
In 1806 British ships of the line scatter like a badly handled merchant convoy, drawing Admiral Linois close enough for HMS London and the squadron to trap him.
- 1:33:35QuestionHow important was an advantage of roughly ten guns per side?AnswerQ&A
Gun count matters, but heavier weapons may matter more, so the numerical difference alone is incomplete.
- 1:33:57QuestionWhere was Linois's French squadron based?AnswerQ&A
It operated principally from Mauritius and other ports as the French Indian Ocean squadron.
- 1:34:22QuestionHow did Amazon inflict decisive damage on Belle Poule while causing relatively few casualties?AnswerQ&A
She damaged the French frigate's rigging and mobility rather than relying on casualty-heavy hull destruction.
- 1:35:14Broadside superiority grows as guns and crews are lostNotable Point
A second rate's extra and often heavier guns, higher deck, and ability to clear exposed positions turn an initial numerical margin into cumulative superiority.
- 1:37:00Wooden guns make Asahi look combat-readyNotable Point
Japan fits the former battleship Asahi with wooden guns so a troop-carrying hull still appears to bring battleship protection into a Chinese harbor.
- 1:41:11QuestionWhy were some pre-dreadnoughts converted into repair, depot, stores, ammunition, cargo, or test ships?AnswerQ&A
Their large stable hulls remained useful, and their triple-expansion engines were relatively economical to run.
- 1:42:30Operation Chariot deceives its way to the dock gateChapter
Captured signals, German colors, recognition flares, and Campbeltown's altered silhouette delay identification until the raiders are a mile from the Normandie Dock.
- 1:47:45QuestionHow did photographs of Campbeltown at the dock gate survive if the destroyer was packed with explosives?AnswerQ&A
The delayed fuse left the wreck intact for hours, so German personnel photographed it before the concealed charge detonated.
- 1:48:31QuestionDid sending Campbeltown into St Nazaire continue the older tradition of gunpowder-filled fire ships?AnswerQ&A
Yes; it was a modern continuation of using the ship itself as an explosive weapon against an enemy fleet or position.
- 1:50:21Delayed charges keep St Nazaire in crisisNotable Point
Campbeltown's late explosion and delayed motor-torpedo-boat weapons turn apparent German control into casualties, panic, searches, and friendly fire long after the raiders have left.
- 1:52:04Why disabling the Normandie Dock matteredNotable Point
Removing an Atlantic repair base limits German capital-ship options and reduces the Royal Navy's need to cover another raiding route with several heavy units.
- 1:54:43Treaty labels did not make capital ships equivalentNotable Point
Treaty categories could group heavy warships together, but battlecruisers, battleships, and fast battleships still differed sharply in protection and staying power.
- 1:57:35QuestionWhen did the Normandie Dock return to service after Operation Chariot?AnswerQ&A
It was unavailable throughout the war, functional again in 1948, and recommissioned in 1950.
- 1:58:35QuestionWas it reasonable for the Germans to assume Campbeltown had only rammed the dock gate rather than carrying a delayed bomb?AnswerQ&A
No; the low-probability but catastrophic alternative demanded verification before the wreck was treated as safe.
- 2:00:19QuestionIf Operation Chariot had not attacked St Nazaire, would Britain have tried another way to disable the Normandie Dock?AnswerQ&A
Yes; RAF bombing and offshore battleship bombardment were considered before the destroyer-and-commando raid was judged the best workable option.
- 2:01:08Bomb disposal treats an unexploded weapon as liveNotable Point
An unexploded charge remains dangerous until specialists make it safe, so Campbeltown should have been isolated even if its fuse appeared to have failed.
- 2:04:16QuestionWould earthquake bombs have made the Normandie Dock harder to repair?AnswerQ&A
Somewhat, but they were unavailable at the time and damaging the dock floor was less decisive than destroying the entrance gate.
- 2:05:39QuestionWas destroying the Normandie Dock's pumping machinery also important?AnswerQ&A
Yes; commandos demolished the pumping gear while Campbeltown attacked the gate.
- 2:06:18Graf Spee alters her identity at seaNotable Point
The German raider changes visible features to resemble an American cruiser or another warship, using physical misidentification to complicate reports of her movements.
- 2:06:50QuestionDid the British cruisers' approach at the River Plate deceive Graf Spee about what she was facing?AnswerQ&A
Yes; Langsdorff initially read Exeter and the two Leander-class cruisers as a light cruiser and two destroyers.
- 2:07:49Disguised raiders stretch British protection worldwideChapter
Merchant-hulled auxiliary cruisers exploit long range and uncertain position to threaten trade where early-war submarines cannot reach and force Britain to disperse escorts globally.
- 2:09:30Harwood predicts Graf Spee's River Plate moveNotable Point
Commodore Henry Harwood turns regional knowledge into a calculated interception, but maintenance leaves his most powerful cruiser absent when Graf Spee arrives.
- 2:15:02World War I raiders supply the German precedentNotable Point
The auxiliary-cruiser campaign of World War II draws on German raider experience from World War I, when ships such as Seeadler tied down British forces and raised commercial costs.
- 2:19:57QuestionDid rate of fire matter more than shell size in some naval battles?AnswerQ&A
Yes; the Royal Navy often favored triple 6-inch turrets because their rate of fire could deliver more explosive on target than 8-inch guns.
- 2:20:47QuestionWhat happened to Admiral Scheer by the end of World War II?AnswerQ&A
She reached Kiel after Baltic operations, was destroyed by RAF bombing, and remains buried beneath the harbor area.
- 2:23:00A naval architect learned the whole shipyardNotable Point
A personal example pairs Cambridge study with a Cammell Laird apprenticeship that progresses through carpentry, welding, and drafting before producing a fully grounded naval architect.
- 2:24:06QuestionHow much did losing Hood affect the Royal Navy's ability to counter German surface raiders?AnswerQ&A
Her speed was valuable, but the deeper problem was inadequate prewar refit funding and too few modernized heavy ships to cover every possible route.
- 2:27:25QuestionDoes a raider's high speed become useless when the merchant convoy is escorted by a slower battleship?AnswerQ&A
Largely yes; the escort stays with the convoy, and even a victorious raider may be damaged badly enough that it cannot evade later British forces.
- 2:29:28QuestionDid Stanley Goodall consider refitting Hood not worthwhile compared with building a new ship?AnswerQ&A
He preferred new construction, but his full discussion supported refitting Hood when replacements could not arrive soon enough.
- 2:31:43QuestionCould Renown have hunted Bismarck instead and freed Hood for refit?AnswerQ&A
Not simply; Renown had other operational commitments, and the Bismarck hunt did not occur in isolation.
- 2:32:25QuestionIs there a cost-of-raider versus merchant-tonnage-sunk ratio that determines whether commerce raiding is worthwhile?AnswerQ&A
No simple ratio works, because the raider also delays and reroutes trade and ties up warships, crews, fuel, ammunition, and other resources.
- 2:33:57QuestionWhat did other navies take away from the Battle of Jutland?AnswerQ&A
Each navy conducted its own study, and the U.S. Navy in particular repeatedly analyzed and refought the battle.
- 2:34:21HMS Abdiel's radio traffic invents a battle squadronNotable Point
Abdiel races between positions while captain and executive officer transmit both sides of a false conversation, persuading Italy that two British battleships are at sea.
- 2:39:30Bodyguard projects invasion fleets away from NormandyChapter
Small craft, false armies, radio traffic, dummy forces, and Lancaster-dropped chaff create apparent invasion threats from Norway to the Pas-de-Calais.
- 2:40:44Repeated troop columns counterfeit a larger armyNotable Point
Civil War and War of 1812 examples reuse the same troops within an observer's limited view, creating the apparent strength needed to delay or intimidate a larger enemy.
- 2:42:22Fortitude gives false invasions their own armiesNotable Point
The fictitious First U.S. Army Group supports the Pas-de-Calais story while a less famous British Fourth Army based around Edinburgh sustains the threat to Norway.
- 2:47:24Bodyguard measures and refines its radar illusionsNotable Point
Small craft and Lancaster-dropped chaff create apparent flotillas, while Ultra reveals German reactions so later deceptions can be adjusted when an illusion fails.
- 2:49:08QuestionHave satellites and modern communications taken surprise out of naval warfare?AnswerQ&A
No; limited and partly predictable surveillance coverage still permits strategic surprise and sometimes tactical surprise.
- 2:50:34Why Britain faked R-class battleships and HermesNotable Point
Merchant conversions and HMS Iron Duke impersonate plausible second-tier capital units that matter operationally but are not tracked as closely as Ark Royal or a Queen Elizabeth.
- 2:52:44Modern deception hides inside too much informationChapter
Electronic warfare can suppress emissions, imitate other forces, and overload surveillance systems with plausible contacts rather than simply denying data.
- 2:54:24Q-ships change the submarine warning calculusChapter
Disguised Flower-class sloops exploit submarines that surface to conserve torpedoes, but the tactic encourages attackers to torpedo merchantmen without warning.
- 2:56:21Algorithms create new limits for deception to exploitNotable Point
As armed forces rely on automated tools to sort expanding sensor feeds, an opponent can study those tools' limits and design false information that survives their filters.