But Britain was not playing defence. Unknown to many, a daring web of operations had been spun to thwart any Nazi grab. Operation Blackthorn: a bold plan to occupy key areas of Spain. Goldeneye: a naval counterpunch to secure the seas. Relator: unleashing the clandestine might of the SOE. Sprinkler: sowing the seeds of Spanish resistance within their own army. And finally, Sconce: a gambit to ignite a guerrilla inferno with former Spanish Republicans.
Gibraltar's Secret Wars
Britain's Plans to Defend Gibraltar in WWII
In 1940, Gibraltar stood alone in Europe. Franco wanted Gibraltar for Spain. Germany wanted Gibraltar for its strategic position. Britain was determined neither should have 'The Rock.'
By Nick Nutter | Published: 2024-03-15 | Updated: 2025-05-19
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As Hitler Eyed the Jewel, Britain Prepared a Multi-Pronged Counteroffensive

Franco Flips a Coin - Britain Races Against Time

Beigbeder, however, proposes a daring gamble. Spain's army could resist the Germans. This, he argues, would spark a national uprising, uniting even regions like Basque and Catalonia against the invaders. But Beigbeder warns Britain be prepared. They need munitions and support ready for Gibraltar, and for General Agustin Munoz Grandes, the regional commander in the south, who might be the key to Spanish defiance. Can Britain act fast enough to tip the odds in their favor? Will Franco gamble on Spanish resistance, or succumb to Hitler's demands? The fate of Gibraltar hung in the balance.
Gibraltar Under the Guns of Franco's Hidden Army

These weren't your average sandbags. We are talking reinforced bunkers, bristling with howitzers and artillery, nestled menacingly on the high ground behind La Linea. Anti-aircraft guns watched the skies, while a network of tunnels and command posts snaked beneath the earth. Even a hidden road, a secret serpent, slithered towards Algeciras.
The cost of this hidden army was horrifying. Over 640 fortifications were carved out of the earth, not by soldiers, but by 30,000 prisoners forced into backbreaking labour. Stories like Gabriel Riera's, forced to eat crushed snails to survive while digging a massive tunnel, paint a grim picture of the human cost behind the cold steel.
Gibraltar may have been a rock, but Franco was determined to make it an extremely uncomfortable one for the British. The question remained: could this hidden army tip the scales in Spain's favour?
A Race Against Time

Britain's top brass, a war council of titans - Admiral Sir Charles Saumarez Daniel, Director of Plans at the Admiralty, Major-General Sir Ian Stanley Ord Playfair, Director of Plans for the army, and Air Chief Marshal Sir Charles Edward Hastings Medhurst, RAF Secretary of the Supreme War Council- huddled in a secret London room. Their mission: "Maintain control of the Straits"
Operation Blackthorn
Gibraltar, the crown jewel, would be reinforced with thousands of troops and mountains of supplies. Retreat was never an option. But if the line crumbled, there was a fallback plan: secure the Tarifa Peninsula, a dagger pointed at the heart of Spain.
Friend or Foe?
Ali Baba and the 20 Thieves?
Goldeneye: A Spy's Gambit in the Shadow of the Rock

In August 1940, responsibility for drawing up the plan was given to Lieutenant Commander Ian Fleming of the Naval Intelligence Department. Of particular concern to Fleming was the possible installation of radar equipment and infrared cameras in the Straits of Gibraltar, which would have been a threat to the Royal Navy's Mediterranean strategy and to the Allied shipping interests in the Atlantic.
Operation Goldeneye later incorporated an alternative plan to Relator, using the Relator officers who would become 'a small highly trained commando for use in ... attacks on shipping, raiding parties, and other local operations based on Gibraltar.'
A Night of Intrigue at the Rock: Fleming Meets Donovan

But the guest list glittered, nonetheless. Brigadier Reggie Parminster, Gibraltar's top administrator, rubbed shoulders with soon-to-be-famous actor Major Anthony Quayle. Lieutenant Peter Forbes, the Governor's aide-de-camp, mingled with Captain Alan Hillgarth, the naval attache from Madrid, and his wife Mary.
A key figure, however, was a relatively unknown figure: Acting Commander Ian Lancaster Fleming RNVR, the personal assistant to the Director of Naval Intelligence. Fresh from a daring road trip from Madrid with the Hillgarths (Mary even remembers a cheeky white ensign flying from their car). We should not neglect the final guest, Fleming's boss, Admiral John Godfrey (who inspired the character 'M' in the Bond books and films).
Fleming was the mastermind behind Operation Goldeneye, Britain's secret plan to safeguard Gibraltar.
During his stay, Fleming is credited with hatching "Operation Tracer," a last-ditch resistance plan incorporated into Goldeneye.
Fleming was not just a thinker; he was a doer. He established a secure communications hub for Goldeneye with a secure cipher link to London, manned by his fellow agent H.L. Greensleeves. A backup office in Tangier ensured operations could continue even if Gibraltar fell.
Years later, echoes of this night would reverberate in Fleming's iconic novels. His Jamaican estate, named "Goldeneye," became the birthplace of James Bond. The name itself, a whisper from Gibraltar's wartime drama, would forever be linked to the world's most famous secret agent.
Hillgarth's Shadow Network
Fleming and Hillgarth, a formidable duo, meticulously planned attacks on key targets: demolitions in Cadiz, Malaga, Huelva, Seville, Lisbon, Cartagena and Alicante, and either the Balearics, or Valencia, Oporto or Almeria as circumstances dictated, and a daring 12-hour operation to silence the Spanish guns threatening Gibraltar, a historical echo of the Rock's legendary past, 'The Sortie' during the Great Siege of Gibraltar.
The next day, Fleming and his companions packed into cars and headed back to Madrid. War stories were swapped, alliances formed, and rivalries simmered. Dykes remarked in his diary that Fleming had not lost the journalistic habit of drinking too much martini, shaken not stirred of course.
Operation Goldeneye, a testament to wartime ingenuity, may never have been deployed, but it left an indelible mark on Gibraltar's history, and on the world of fiction.
Franco's Folly Still Stands
Secrets of the Rock

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