'Jaywick' was a British and Australian special forces attack on Japanese shipping in Singapore harbour (26 September 1943). , The undertaking resulted in the sinking of seven ... Read More

'JB' was a British naval minelaying operation in the North Sea (3/4 February 1940)., The minelaying was undertaken by the destroyers Esk, Express, Intrepid and Ivanhoe, which ... Read More

'JC' was the designation of Allied convoys (together with a numerical and sometimes a literal suffix) plying the route from Colombo, Ceylon, to Calcutta and other Indian ports... Read More

'Jealous I' was a British naval undertaking by MGB-697 of the 15th Motor Gun Boat Flotilla to land and collect agents at the Pointe de St Cast on the coast of German-occupied ... Read More

'Jealous II' was a British naval undertaking by Lieutenant P. Williams’s MGB-502 of the 15th Motor Gun Boat Flotilla to land and collect agents at the Pointe de St Cast on t... Read More

'Jealous III' was a British naval undertaking by Lieutenant P. A. Williams’s MGB-502 of the 15th Motor Gun Boat Flotilla to land six agents and collect up to nine agents at ... Read More

'Jeanne' was was a US special forces operation to parachute a two-man Office of Strategic Services team into the Orléans area of German-occupied France on an intelligence-gat... Read More

'Jedburgh' was an Allied clandestine operation in which teams. usually of three men, from the British Special Operations Executive, US Office of Strategic Services the Free Fr... Read More

'Jeep' was an Allied exercise to test the loading and unloading of troops in preparation for 'Neptune' (iii) (5 March 1944). ... Read More

'Jekyll' was the British movement of the headquarters of Lieutenant General Sir Oliver Leese’s Allied Land Forces South-East Asia command from New Delhi to Barrackpore in th... Read More

'Jeremy' was an Allied special forces operation to parachute a three-man French and US 'Jedburgh' team into the Haute Loire area of German-occupied France to aid local resista... Read More

'Jericho' was a British bombing raid, undertaken at very low altitude, against the Amiens prison in German-occupied France with the object of blasting holes in the prison wall... Read More

'Jessica' was a US deception undertaking designed to persuade the Germans to maintain large forces in the Franco/Italian border area and thereby prevent their use to reinforce... Read More

'JF' was the designation of Allied convoys (together with a numerical suffix) plying the route from Rio de Janeiro to Florianópolis, Brazil, and as such reciprocals of the 'F... Read More

'JG' was the designation of Allied convoys (together with a numerical suffix) plying the route from Kingston, Jamaica to Guantánamo, Cuba, and as such reciprocals of the 'GJ'... Read More

'JH' (i) was the designation of Allied convoys (together with a numerical and sometimes a literal suffix) plying the route from St John’s, Newfoundland to Halifax, Nova Scot... Read More

'JH' (ii) was a British naval minelaying operation in the Bay of Biscay off the west coast of German-occupied France (December 1940). ... Read More

'Jigsaw' was an Allied deception designed to provide cover for the planned 'Brimstone' (ii) amphibious assault on Sardinia (1943)., Related to 'Canute' and 'Gargoyle', 'Jigsaw... Read More

'Jim' was an Allied special forces operation to parachute a three-man French and US 'Jedburgh' team into the Ain area of German-occupied France to establish liaison with the l... Read More

'Jim Crow' was the British overall designation of fighter patrols over coastal waters to watch for the arrival of any German invasion forces (1940/41)., The concept was later ... Read More

'Jitterbug' was a US deception designed to boost the apparent realism of 'Rosebud' in confirming the reality of Lieutenant General George S. Patton’s US 1st Army Group in so... Read More

'JM' (i) was the designation of Allied convoys (together with a numerical suffix) plying the route from India via Kilindini, Kenya, to Madagascar (May 1943/June 1944)., The tw... Read More

'JN' was the designation of Allied convoys (together with a numerical suffix) plying the route from St John’s, Newfoundland to Labrador, and as such reciprocals of the 'NJ' ... Read More

'Jockey' was the Allied committee responsible for the development of intelligence and other information resources which would allow operational commanders to plan bombing atta... Read More

'Jocko' was the informal designation of a US naval attack against the Japanese positions on Iwo Jima island (23/24 June 1944)., On 23 June Rear Admiral Joseph J. Clark’s Ta... Read More

'Jockworth' was a British special forces operation by the French 3rd Régiment de Chasseurs Parachutistes (3rd Special Air Service) to harass German communications near Villef... Read More

'John' was an Allied special forces operation to parachute a three-man British and French 'Jedburgh' team into the Ariège area of German-occupied France to aid local resistan... Read More

'Jolka' was a German unrealised plan for the invasion and capture of neutral Switzerland in the face of Swiss resistance (mid-1940)., The plan was prepared in outline by the h... Read More

'Jonah' was a British unrealised deception plan to use the 'Purple Whales' disinformation channel to arrange for the passage into Japanese hands of the negative of a photograp... Read More

'Jonquil' special forces operation by the 2nd Special Air Service to collect and evacuate some of the large number of Allied ex-prisoners of war on the loose in the Italian co... Read More

'Jordan was a British unrealised plan to float incendiary matter down some of the major rivers in German-occupied Europe and set this matter alight in the hopes of destroying ... Read More

'Joseph' was a German unrealised plan to attack and destroy the electricity-generating plants around Moscow and thereby degrade the war-making capacity of Soviet transport and... Read More

'Josephine' was the British overall designation for Special Operations Executive operations in the south-western part of German-occupied France (1941/44). ... Read More

'Josephine B' was a British and Free French sabotage undertaking in south-western France organised by the Special Operations Executive (11 May/7 June 1941)., The operation was... Read More

'Joshua' was a British unrealised plan proposed to the USSR for joint operations in Finland (December 1941/January 1942)., A joint Anglo-Soviet offensive into the Arctic regio... Read More

'Jostle' was the British overall designation for operations to jam German radio communications in western Europe using 2.5-kW airborne jamming equipment in Boeing Fortress air... Read More

'Journalist' (i) was a British commando training operation in association with the proposed 'Pilgrim' occupation of the Portuguese island possessions in the Atlantic in June 1... Read More

'Journalist' (ii) was the British advance of Lieutenant General Sir William Slim’s 14th Army after the Battle of Imphal from Assam and Manipur in north-eastern India behind ... Read More

'Joyful' was a British programme of air attacks on German air bases in the northern part of German-occupied France (1942). ... Read More

'JR' was the designation of Allied convoys (together with a numerical suffix) plying the route from Rio de Janeiro to Recife, Brazil, and as such reciprocals of the 'RJ' serie... Read More

'JS' was the designation of Allied convoys (together with a numerical and, in one case, a literal suffix) plying the route from Colombo, Ceylon, to Singapore, and as such reci... Read More

'JT' (i) was a British naval minelaying operation in the English Channel (September 1942). ... Read More

'JT' (ii) was the designation of Allied convoys (together with a numerical suffix) plying from Rio de Janeiro, Brazil to Trinidad, and as such reciprocals of the 'TJ' series a... Read More

'JU' was a British naval minelaying operation in the Bay of Biscay off the west coast of German-occupied France (October 1941). ... Read More

'Jubilant' was an Allied unrealised plan by Lieutenant General Lewis H. Brereton’s Allied 1st Airborne Army to seize German camps in which Allied prisoners of war were being... Read More

'Jubilee' was an Allied amphibious assault on Dieppe on the north coast of German-occupied France (19 August 1942)., The undertaking involved more than 6,000 infantry, most of... Read More

'Juchten' was a German attack by the 6th SS Gebirgsjägerregiment of SS-Gruppenführer und Generalleutnant der Waffen-SS Lothar Debes’s SS Gebirgsdivision 'Nord' in an area ... Read More

'Judas' (i) was a German unrealised contingency plan for the destruction of Bulgaria’s infrastructure and the disarmament of the Bulgarian armed forces in the event that Bul... Read More

'Judas' (ii) was a German operation against partisan forces in Bulgaria (1944). ... Read More

'Jude' was an Allied special forces operation to parachute a three-man British and French 'Jedburgh' team into the Yonne area of German-occupied France to aid local resistance... Read More