'Heu' was a German operation against the partisan forces of Josip Broz Tito in Axis-occupied Yugoslavia (10/15 August 1943)., The operation was carried out by the 1 and 3/383r... Read More

'Heu Aktion' was a German programme to impress large numbers of 10/15-year old eastern European, but especially Belorussian and Ukrainian, youths for training as skilled labou... Read More

'Heuschober' was a German operation by the 370th Regiment (kroatisch) of Generalleutnant Georg Reinicke’s 369th Division (kroatische) with the object of capturing the high g... Read More

'HF' (i) was a British naval minelaying operation in the Bay of Biscay (September 1941). ... Read More

'HF' (ii) was the designation of Allied convoys (together with a numerical and sometimes a literal suffix) plying the route from Halifax, Nova Scotia, to St John, New Brunswic... Read More

'HG' was the designation of Allied slow and fast convoys (together with a numerical) plying from Gibraltar or, in the case of three of the convoys, Port Said to Liverpool in t... Read More

'HGY' was the designation of a single Allied convoy from Gibraltar to Liverpool in the UK (2/14 July 1940)., The convoy comprised 27 British, Dutch, Estonian, Greek, Norwegian... Read More

'HGZ' was a single British convoy from Gibraltar to join the SL.36 convoy to the UK (24 June/1 July 1940)., The convoy comprised 24 unescorted ships carrying a miscellany of c... Read More

'HHX' was the designation of Allied convoys (together with a numerical suffix) plying from Halifax, Nova Scotia, to join any of the 'HX' convoys from New York at the Halifax O... Read More

'Hi' was the designation of Japanese mercantile convoys (together with a numerical suffix) between Singapore and Imari Bay of Moji in Kyushu in the Japanese home islands (10 J... Read More

'Hiccoughs' was a British long-term intelligence deception against the Japanese in Burma (1942/45)., The operation took the form of spurious messages, in an easily breakable c... Read More

'Hide' was a British naval undertaking by Vice Admiral Sir James Somerville’s Gibraltar-based Force 'H' to meet and escort the battleship Malaya and the MG.1 convoy from Mal... Read More

'Hiding' was a British plan for the defence of Cyprus (1941). ... Read More

'Hikari' was a Japanese unrealised plan for an aerial reconnaissance of Ulithi atoll in the Caroline islands group (August 1945)., The object of the operation was the provisio... Read More

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

'Himmelbett' was the German original concept for a night-fighter network and tactics in which each target (a British bomber) needed the attentions of two Freya radars (one to ... Read More

'Himmelfahrt' was a German special forces operation designed to prevent any Allied movement of forces and agents across the Great St Bernard, Little St Bernard and other passe... Read More

'Himmler' was the German cover operation to provide a pretext for the 'Weiss' (i) invasion of Poland (31 August 1939)., The undertaking was centred on the so-called 'Gleiwitz ... Read More

'Hindenburg' (i) was the German codeword within 'Sichelschnitt' for Generalmajor Johann Joachim Stever’s 4th Panzerdivision of General Erich Hoepner’s XVI Corps (mot.) in ... Read More

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'Hinein' was a U-boat wolfpack operation in the Atlantic against the ON.221 convoy (26 January/3 February 1944)., The wolfpack comprised U-212, U-271, U-281, U-441, U-571, U-5... Read More

'Hires' was the Allied fully developed version of 'Brimstone' (i) (July 1943). ... Read More

The 'Hitler-Riegel' was a German defence line in Italy (November 1943/May 1944)., The construction of this 26-mile (42-km) line was ordered by Adolf Hitler as a back-up for th... Read More

'HJ' (i) was a British series of nine naval minelaying operations in the northern part of the Bay of Biscay off the ports of Lorient and Brest in the north-west German-occupie... Read More

HJ' (ii) was the designation of Allied convoys (together with a numerical suffix) plying the route from Halifax, Nova Scotia, to St John’s, Newfoundland, and as such recipro... Read More

'HJF' was the designation of Allied fast convoys (together with a numerical and sometimes a literal suffix) plying the route from Halifax, Nova Scotia, to St John’s, Newfoun... Read More

'HK' was the designation of Allied convoys (together with a numerical suffix) plying the route from Galveston, Texas, or Pilottown, Mississippi, to Key West, Florida, and as s... Read More

'HL1' was a British naval minelaying operation in the area of the Ile de la Vierge off the coast of German-occupied France (February 1943). ... Read More

'HL2' was a British naval minelaying operation in the area of the Ile de Batz off the coast of German-occupied France (February 1942). ... Read More

'HM' (i) was a British naval minelaying operation in the Bay of Biscay to the west-south-west of St Nazaire in German-occupied north-western France (April 1942). ... Read More

'HM' (ii) was the designation of Allied coastal convoys (together with a numerical suffix) plying the route from Holyhead to Milford Haven in Wales, and as such reciprocals of... Read More

'HN' was the designation of Allied convoys (together with a numerical and sometimes a literal suffix) plying between Bergen in Norway and Methil on the Firth of Forth, and as ... Read More

'Hobgoblin' was the British alternative designation for the 'Corkscrew' (i) landing on the island of Pantelleria (11 June 1943). ... Read More

'Hoch-Savoyen' was a German offensive against the French resistance forces based on the Glières plateau of the Massif des Bornes in the Haute-Savoie area (31 January/26 March... Read More

'Hochsommer' was a German offensive against the French maquis in the département of Isère (August 1944)., This département had been occupied by Italian forces from November... Read More

'Höcker' was a German attack by elements of Generalfeldmarschall Ernst Busch’s 16th Army against formations of General Leytenant Pavel A. Kurochkin’s North-West Front to ... Read More

'Hoffnung' was a German unsuccessful naval undertaking by the heavy cruiser Admiral Hipper, escorted by four destroyers, against Allied merchant vessels making independent pas... Read More

'Hohes Venn' was the German alternative designation for 'Stösser' within 'Wacht am Rhein' (16/24 December 1944). ... Read More

The 'Hokkaido Offensive Operation' was the Soviet unrealised undertaking to seize the northern part of Hokkaido, the most northerly of the Japanese home islands (24 August 194... Read More

'Hokki' was a Finnish airborne operation designed to destroy the railway marshalling yards at Petrozavodsk (August/September 1944)., The only known Finnish undertaking of the ... Read More

'Holder' was a British naval operation to deliver personnel, stores and mail from Scapa Flow to Murmansk at the base of the Kola inlet in the northern USSR (1/11 October 1943)... Read More

The 'Hollandsche Waterlijn' was a Dutch line of defensive positions based on water lines (1940)., The first 'Hollandsche Waterlijn' was a series of water-based defences concei... Read More

'Holly' was the US geographical rather than operational codename for Canton island of the Phoenix islands group (1941/45)., Canton island is a small atoll near the equator som... Read More

'Holzauge' was a German meteorological operation in Greenland (12 August 1942/17 June 1943)., On several occasions the Germans tried to establish weather stations on the easte... Read More

'HON' was the designation of Allied convoys (together with a numerical suffix) sailing from Halifax, Nova Scotia, to join 'ON' convoys at the Halifax Ocean Meeting Point (?). ... Read More

'Honeysuckle' was a British deception planned and implemented as a supplement to the 'Rosebud' radio deception intended to validate the existence in German minds of Lieutenant... Read More

'Honker' was the British portion of the Allied 'Diadem' advance, after the breakthrough of the 'Gustav-Linie' defences at Cassino, by Lieutenant General Sir Oliver Leese’s 8... Read More

'Hook' was a British programme of naval operations against piracy in the waters off Thailand (1945). ... Read More

'Hooker' was the British amphibious landing at Pizzo on the 'instep' of the Italian 'foot' and capture of Bagnara by Brigadier R. E. Urquhart’s 231st Brigade (8/9 September ... Read More

'Hoops' was a British carrierborne air operation against shipping off the coast of German-occupied Norway by a force of three escort carriers and supporting warships of Admira... Read More