Showing posts with label Bombe. Show all posts
Showing posts with label Bombe. Show all posts

Thursday, May 26, 2016

April 24, 1940: British Bombard Narvik

Wednesday 24 April 1940

24 April 1940 worldwartwo.filminspector.com Himmler Quisling Terborven, von Falkenhorst
The German hierarchy in Norway: Vidkun Quisling, Heinrich Himmler, Reichskommissar Josef Terboven, and military commander Generaloberst Nikolaus von Falkenhorst in 1941 (Bundesarchiv, Bild 101III-Moebius-029-12 / Möbius / CC-BY-SA 3.0).

Norway: The Germans, bypassing Quisling, on 24 April 1940 appoint Josef Antonius Heinrich Terboven as Reichskommissar or Gauleiter of Norway. Naturally, his authority ends at the range of German guns.

U.S. Naval Attaché Lt. Commander Ole E. Hagen, taking up where the deceased Robert E. Losey left off, escorts a party of American citizens evacuated from Oslo to the interior of Norway. Then, they cross into neutral Sweden and safety in Stockholm.

Norway Army Operations: German troops in eastern Norway advance past Lillehammer in the Osterdal and reach Rendal.

The British 15th Infantry Brigade (General Bernard Paget) lands at Andalsnes moves quickly to take up a blocking position at Kvam. The troops have been cooped up in the ships since the 15th.

The German 196th Infantry Division has crushed the British 148th Infantry Brigade, which, down to about 300 men, retires past the Paget's troops at Kvam to Otta. Otta is another key road junction in the chain of defiles that bisect Norway. The Germans are hot on the heels of the 148th Infantry Brigade and run into the fresh 15th Infantry Brigade.

At Hegra Fortress, the incessant German bombardment continues. Today, the Germans knock out the second and last of the 7.5 cm guns in the fortress, making it even less of a threat to the Germans. After this point, the Germans use an assortment of unusual or captured weaponry to gradually wear down this non-threatening nuisance.

At Narvik, the Norwegian 6th Brigade (General Carl Gustav Fleischer) attacks south towards Narvik at Gratangsbotn. The German mountain troops under General Dietl hold the attack at Lapphaug Pass. The crafty Germans circle back through an undefended pass near Gratangsbotn on Fjordbotneidet mountain and ambush the Norwegians, who have relaxed for the night. The Germans kill 34, wound 64, take 130 prisoners and set up a new position at Gratangsbotn, for casualties of their own of 9 dead and 16 wounded. The Germans at Narvik are elite troops, with high morale and well-led.

Norway Naval Operations: British battleship Warspite, which had been devastating during the Second Battle of Narvik, returns there with cruisers HMS Effingham, Enterprise and Aurora, and destroyer Zulu (they are screened by British destroyers HMS Encounter, Escort, Faulknor, Foxhound, Havock, Hero, Hostile and Polish destroyers Blyskawica and Grom). The battleship force, under the command of Admiral of the Fleet Lord Cork, once again boldly sails up the Ofotfjord and bombards Narvik again for three hours and point-blank range. HMS Effingham sinks captured British cargo ship Riverton at the dock.

However, the accompanying cruiser Vindictive, which is loaded with troops for a landing, does not land its troops after the commanding British army General cancels the landing. Here is where it gets controversial: despite the devastating firepower assembled, it is said that the flat trajectory of the ships' fire does not sufficiently eliminate the enemy according to the standard story.

Many thus later blame Cork for the failed invasion at Narvik, because he is an easy target who has been brought back off the retired list and has seniority over everybody else, so nobody dares to question him. However, the British are facing determined German troops who do not easily succumb. Both Cork - no pansy - and General Orrey in command of the ground troops actually go ashore, but they find that the snow makes the landing too difficult against mountain troops dug in all over the fjord. It is impossible to square the legend - that the fleet approached too close to town to destroy the defenders - with the reality that it was the ground commander who called off the invasion due to the weather conditions.

Three French destroyers in the Skagerrak battle German patrol boats and also fend off Luftwaffe attacks.

24 April 1940 worldwartwo.filminspector.com Narvik
Narvik and surrounding hills aflame after the 24 April 1940 shelling.
European Air Operations: The RAF raids five Luftwaffe airfields which are supporting German ground operations in Norway: Aalborg, Kristiansand, Oslo, Stavanger, and Westerland on the island of Sylt. During the raid, the RAF sinks two German patrol boats north of Sylt. Luftwaffe fighters challenge the British bombers over Stavanger.

The RAF conducts armed reconnaissance over Trondheim Fjord.

HMS Glorious sends its cargo of 18 No. 263 Squadron Gloster Gladiators to frozen Lake Lesjaskogsvatnet, between Andalsnes and Dombås. The operation once again shows poor planning, as the lake base has no anti-aircraft support.

The Luftwaffe bombs Åndalsnes during the day. They badly damage the British anti-aircraft cruiser HMS Curacoa with a bomb that crashes through the deck in front of the bridge, explodes, and kills 45 men and wounds 36. The ship has to withdraw to Chatham.

Royal Navy aircraft carrier Ark Royal sends its Fleet Air Arm aircraft into battle against German fighters over Trondheim.

The Luftwaffe bombs Scapa Flow during the night. After dropping some bombs on land and machine-gunning a road, the RAF and anti-aircraft drive them off.

Battle of the Atlantic: U-23 spots British cruiser HMS York while it is steaming back to Scapa Flow after having deposited Paget's troops at Åndalsnes. Despite two attempts, the U-boat fails to hit the fast cruiser.

British freighters Stokesley and Rydal Forces hit mines in the English Channel and sink.

Convoy OA 135G departs from Southend, Convoy OB 134 departs from Liverpool, and Convoy OB 135 departs from Liverpool.

German armed auxiliary cruiser Orion sinks British freighter Haxby east of Bermuda.

24 April 1940 worldwartwo.filminspector.com HMS Griffin
HMS Griffin (H31).
Spy Stuff: Two British destroyers, HMS Griffin and Acheron, are on patrol in the North Sea when they stop a freighter for inspection off Andalsnes, about halfway between Bergen and Trondheim on the Norwegian coastline. The ship's captain claims that it is an ordinary Dutch trawler. The British boarding party from Griffin does a thorough inspection and finds that it is the disguised Kriegsmarine surface raider Schiff 26 - the Polares. It is trying to bring supplies to Narvik.

The German crew acts quickly and throws a weighted bag overboard. The British act even quicker and retrieve the bag before it sinks. It turns out to contain some of the German Enigma machine coding machine keys for the period 23–26 April, including the procedures for scrambling the rotors.

These are quickly sent to Bletchley Park, site of the Ultra decoding project. The cryptanalysts there use the information to program their "Bombe" electro-mechanical computers. The machines prove that they can decode German transmissions from this time period.

This is a clear breakthrough for the Ultra team. Now, they have proven that their system works. From this point on, the Royal Navy is tasked with finding new "cribs" such as the ones from the Polares to enhance their code-breaking. Ultimately, this enables the Bombes to break German codes even without recent cribs.

China: At Macao, the Japanese advance and force the police to retreat into the Portuguese colony.

American Homefront: Baseball legend Lou Gehrig makes what is believed to be his final dugout appearance during a Yankees game.

24 April 1940 worldwartwo.filminspector.com Natchez Mississippi
A huge fire in Natchez claims a hundred or more lives.

April 1940

April 1, 1940: Weserubung is a Go
April 2, 1940: British Subs On Alert
April 3, 1940: Churchill Consolidates Power
April 4, 1940: Missed the Bus
April 5, 1940: Mig-1 First Flight
April 6, 1940: Troops Sailing to Norway
April 7, 1940: Fleets At Sea
April 8, 1940: HMS Glowworm and Admiral Hipper
April 9, 1940: Invasion of Norway
April 10, 1940: First Battle of Narvik
April 11, 1940: Britain Takes the Faroes
April 12, 1940: Germans Consolidate in Norway
April 13, 1940: 2d Battle of Narvik
April 14, 1940: Battle of Dombås
April 15, 1940: British in Norway
April 16, 1940: Germans Cut Norway in Half
April 17, 1940: Trondheim the Target
April 18, 1940: Norway Declares War
April 19, 1940: Dombås Battle Ends
April 20, 1940: Germans Advancing in Norway
April 21, 1940: First US Military Casualty
April 22, 1940: First British Military Contact with Germans
April 23, 1940: British Retreating in Norway
April 24, 1940: British Bombard Narvik
April 25, 1940: Norwegian Air Battles
April 26, 1940: Norwegian Gold
April 27, 1940: Allies to Evacuate Norway
April 28, 1940: Prepared Piano
April 29, 1940: British at Bodo
April 30, 1940: Clacton-on-Sea Heinkel

2019

Wednesday, May 18, 2016

March 15, 1940: The Bletchley Bombe

Friday 15 March 1940

15 March 1940 worldwartwo.filminspector.com Turing Bomb Bletchley Park
Bletchley Park Bombe.
Winter War: The Finnish Diet ratifies the Moscow Peace Treaty 145-3 (52 abstentions) on 15 March 1940 after Prime Minister Risto Ryti states:
Finland, as well as the whole of Western civilization, is still in the greatest danger, and no one can say what tomorrow may bring. We believe that by choosing peace we have acted in the best way for the moment.
The Soviet troops receive a different message:
The mighty force of the Red Army has again secured safety and a lasting peace!
Battle of the Atlantic: British aircraft carrier HMS Eagle suffers damage near the Nicobar Islands when a stowed 250 lb. aircraft bomb accidentally explodes. There are 14 deaths, 3 injured. The aircraft carrier needs minor repairs.

British freighter Melrose hits a mine and sinks off Dunkirk.

British freighter Peridot hits a mine and sinks off Dover.

Royal Navy armed merchant cruiser Kanimbla, a converted Australian passenger ships, is operating in the Sea of Japan. It captures two Soviet freighters, the Selenga and the Vladimir Mayakovsky (US copper), carrying ore to Germany. The captured ships are taken to Saigon in French Indochina via Hong Kong.

Convoy OA 110G departs from Southend.

European Air Operations: The RAF drops leaflets over Warsaw after dark. In an odd interlude during the Phony War, one of the Whitleys lands by mistake in a field behind the Siegfried Line. The startled inhabitants not only do not call the authorities, but they also chat with the British airmen and refuel their plane. They take off again before the authorities arrive amidst some small-arms fire.

Military Intelligence: Alan Turing's Government Code and Cypher School group at Bletchley Park makes a giant stride in reading German codes. Its first working Bombe, the "Victory," is completed at the British Tabulating Machine Company at Letchworth, Hertfordshire. The Bombe goes operational and begins reading some German codes in virtually real-time.

Terrorism: Indian nationalist Udham Singh is charged with the assassination of Sir Michael O'Dwyer, colonial ex-governor of Punjab.

US Government: Undersecretary of State Sumner Welles returns to Rome.

Middle East: Turkish and French commands hold a conference at Aleppo.

Czechoslovakia: There is unrest on the first anniversary of the German takeover. The SS imposes harsh discipline with numerous arrests.

Romania: The government grants an amnesty for the fascist Iron Guard ("Greenshirts"), outlawed since the 21 September 1939 assassination of Prime Minister Calinescu. The 800 released from prison must swear an oath of allegiance to King Carol II. This is a key moment in the gradual shift of the country's allegiance away from the Western Allies due to their ineffectiveness on the Continent.

Australia: The new Chief of the General Staff is Sir Cyril Brudenell White. He had held the same position from 1920-1923 and is recalled to service and promoted to General to take this position, which became available when his predecessor Lieutenant-General Ernest Squires unexpected passed away.

China: At the Battle of South Kwangsi, the Japanese 22nd Army captures Yung-shun east of Nanning.

American Homefront: "The Grapes of Wrath," starring Henry Fonda and directed by John Ford from the novel by John Steinbeck, is released.

Future History: Phil Lesh is born in Berkeley, California. He becomes famous in the '60s and '70s as a bass guitarist for the Grateful Dead.

15 March 1940 worldwartwo.filminspector.com HMS Eagle
HMS Eagle.

March 1940

March 1, 1940: Soviet Breakthroughs Past Viipuri
March 2, 1940: Soviets Swarm West in Finland
March 3, 1940: Soviets Across Gulf of Viipuri
March 4, 1940: USSR Apologizes to Sweden
March 5, 1940: Katyn Forest Massacre Approved
March 6, 1940: Finns Head to Moscow
March 7, 1940: The Coal Ships Affair
March 8, 1940: Peace Talks Begin in Moscow
March 9, 1940: Soviets Harden Peace Terms
March 10, 1940: Germany Draws Closer to Italy
March 11, 1940: Winter War Peace Terms Finalized
March 12, 1940: War is Over (If You Want It)
March 13, 1940: Winter War Ends
March 14, 1940: Evacuating Karelia
March 15, 1940: The Bletchley Bombe
March 16, 1940: First British Civilian Killed
March 17, 1940: Enter Dr. Todt
March 18, 1940: Mussolini To Join the War
March 19, 1940: Daladier Resigns
March 20, 1940: Soviets Occupy Hango Naval Base
March 21, 1940: Paul Reynaud Leads France
March 22, 1940: Night Fighters Arise!
March 24, 1940: French Consider Alternatives
March 25, 1940: Reynaud Proposes Action
March 26, 1940: C-46 First Flight
March 27, 1940: Himmler Authorizes Auschwitz Construction
March 28, 1940: Allies Ponder Invading Norway
March 29, 1940: Soviets Prefer Neutrality
March 30, 1940: Allied Uncertainty
March 31, 1940: The Tiger Cage

2019