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Saturday, 6 June 2009

HISTORIUM OBSERVATORIUM - NORMANDY LANDINGS / THE LONGEST DAY OF THE WORLD WAR II


Pictures Courtesy - mooncat56

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The Normandy Landings were the first operations of the Allied invasion of Normandy, also known as Operation Neptune and Operation Overlord, during World War II. The landings commenced on June 6, 1944 (D-Day), beginning at 6:30 British Double Summer Time (H-Hour). In planning, D-Day was the term used for the day of actual landing, which was dependent on final approval.

The assault was conducted in two phases: an air assault landing of American, British and Canadian airborne troops shortly after midnight, and an amphibious landing of Allied infantry and armoured divisions on the coast of France commencing at 6:30. There were also subsidiary 'attacks' mounted under the codenames Operation Glimmer and Operation Taxable to distract the Kriegsmarine and the German army from the real landing areas.

The operation was the largest single-day amphibious invasion of all time, with 160,000 troops landing on June 6, 1944. 195,700 Allied naval and merchant navy personnel in over 5,000 ships were involved. The invasion required the transport of soldiers and materiel from the United Kingdom by troop-laden aircraft and ships, the assault landings, air support, naval interdiction of the English Channel and naval fire-support. The landings took place along a 50-mile (80 km) stretch of the Normandy coast divided into five sectors: Utah, Omaha, Gold, Juno and Sword.

Discover now more informations about D-Day with the following report made on WEB 2.0 - Carpe Diem Passengers - JPFG 2009

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Coordination with the French Resistance

The various factions and circuits of the French Resistance were included in the plan for Overlord. Through a London-based headquarters which supposedly embraced all resistance groups, État-major des Forces Françaises de l'Intérieur (EMFFI), the British Special Operations Executive orchestrated a massive campaign of sabotage tasking the various Groups with attacking railway lines, ambushing roads, or destroying telephone exchanges or electrical substations. The resistance was alerted to carry out these tasks by means of the messages personnels, transmitted by the BBC in its French service from London. Several hundred of these were regularly transmitted, masking the few of them that were really significant.

Among the stream of apparently meaningless messages broadcast by the BBC at 21:00 CET on 5 June, were coded instructions such as Les carottes sont cuites ("The carrots are cooked") and Les dés sont jetés ("The dice have been thrown").

One famous pair of these messages is often mistakenly stated to be a general call to arms by the Resistance. A few days before D-Day, the (slightly misquoted) first line of Verlaine's poem, Chanson d'Automne, was transmitted. "Les sanglots longs des violons de l'automne" (Long sobs of autumn violins) alerted the resistance of the Ventriloquist network in the Orléans region to attack rail targets within the next few days. The second line, "Bercent mon coeur d'une langueur monotone" ("soothe my heart with a monotonous languor"), transmitted late on 5 June, meant that the attack was to be mounted immediately.

Josef Götz, the head of the signals section of the German intelligence service (the SD) in Paris, had discovered the meaning of the second line of Verlaine's poem, and no fewer than fourteen other executive orders they heard late on 5 June. His section rightly interpreted them to mean that invasion was imminent or underway, and they alerted their superiors and all Army commanders in France. However, they had issued a similar warning a month before, when the Allies had begun invasion preparations and alerted the Resistance, but then stood down because of a forecast of bad weather. The SD having given this false alarm, their genuine alarm was ignored or treated as merely routine. Fifteenth Army HQ passed the information on to its units; Seventh Army ignored it.

In addition to the tasks given to the Resistance as part of the invasion effort, the Special Operations Executive planned to reinforce the Resistance with three-man liaison parties, under Operation Jedburgh. The Jedburgh parties would coordinate and arrange supply drops to the Maquis groups in the German rear areas. Also operating far behind German lines and frequently working closely with the Resistance, although not under SOE, were larger parties from the British, French and Belgian units of the Special Air Service brigade.

Naval activity

The Invasion Fleet was drawn from 8 different navies, comprising 6,939 vessels: 1,213 warships, 4,126 transport vessels (landing ships and landing craft), and 736 ancillary craft and 864 merchant vessels.[8]

The overall commander of the Allied Naval Expeditionary Force, providing close protection and bombardment at the beaches, was Admiral Sir Bertram Ramsay who had been responsible for the planning of the invasion of North Africa in 1942 and one of the two fleets carrying troops for the invasion of Sicily in the following year. The Allied Naval Expeditionary Force was divided into two Naval Task Forces: Western (Rear-Admiral Alan G Kirk) and Eastern (Rear-Admiral Sir Philip Vian – another veteran of the Italian landings).

The warships provided cover for the transports against the enemy whether in the form of surface warships, submarines or as an aerial attack and gave support to the landings through shore bombardment. These ships included the Allied Task Force "O". A small part of the naval operation was Operation Gambit, when British midget submarines supplied navigation beacons to guide landing craft.

Naval screen

An important part of Neptune was the isolation of the invasion routes and beaches from any intervention by the German Navy – the Kriegsmarine. The responsibility for this was assigned to the Royal Navy's Home Fleet. There were two principal perceived German naval threats. The first was surface attack by German capital ships from anchorages in Scandinavia and the Baltic Sea. This did not materialise since, by mid-1944, the battleships were damaged, the cruisers were used for training and the Kriegsmarine's fuel allocation had been cut by a third. The inactivity may also have resulted from Hitler's disillusion with the Kriegsmarine. In any case, the Royal Navy had strong forces available to repel any attempts, and the Kiel Canal area was mined (Operation Bravado) as a precaution.

The second perceived major threat was that of U-boats transferred from the Atlantic. Air surveillance from three escort carriers and RAF Coastal Command maintained a cordon well west of Land's End. Few U-boats were spotted, and most of the escort groups were moved nearer to the landings.

Further efforts were made to seal the Western Approaches against German naval forces from Brittany and the Bay of Biscay. Minefields were laid (Operation Maple) to force enemy ships away from air protection where they could be attacked by Allied destroyer flotillas. Again, enemy activity was minor, but on 4 July four German destroyers were either sunk or forced back to Brest.

The Straits of Dover were closed by minefields, naval and air patrols, radar, and effective bombing raids on enemy ports. Local German naval forces were small but could be reinforced from the Baltic. Their efforts, however, were concentrated on protecting the Pas de Calais against expected landings there, and no attempt was made to force the blockade.

The screening operation destroyed few German ships, but the objective was achieved. There were no U-boat attacks against Allied shipping and few attempts by surface ships.

Bombardment

Warships provided supporting fire for the land forces. During Neptune, it was given a high importance, using ships from battleships to destroyers and landing craft. For example, the Canadians at Juno beach had fire support many times greater than they had had for the Dieppe Raid in 1942. The old battleships HMS Ramillies and Warspite and the monitor HMS Roberts were used to suppress shore batteries east of the Orne; cruisers targeted shore batteries at Ver-sur-Mer and Moulineaux; eleven destroyers for local fire support. In addition, there were modified landing-craft: eight "Landing Craft Gun", each with two 4.7-inch guns; four "Landing Craft Support" with automatic cannon; eight Landing Craft Tank (Rocket), each with a single salvo of 1,100 5-inch rockets; eight Landing Craft Assault (Hedgerow), each with twenty-four bombs intended to detonate beach mines prematurely. Twenty-four Landing Craft Tank carried Priest self-propelled howitzers which also fired while they were on the run-in to the beach. Similar arrangements existed at other beaches.

Fire support went beyond the suppression of shore defenses overlooking landing beaches and was also used to break up enemy concentrations as the troops moved inland. This was particularly noted in German reports: Field-Marshall Gerd von Rundstedt reported that:

... The enemy had deployed very strong Naval forces off the shores of the bridgehead. These can be used as quickly mobile, constantly available artillery, at points where they are necessary as defence against our attacks or as support for enemy attacks. During the day their fire is skillfully directed by . . . plane observers, and by advanced ground fire spotters. Because of the high rapid-fire capacity of Naval guns they play an important part in the battle within their range. The movement of tanks by day, in open country, within the range of these naval guns is hardly possible.

Just prior to the invasion, General Eisenhower transmitted a now-historic message to all members of the Allied Expeditionary Force. It read, in part, "You are about to embark upon the great crusade, toward which we have striven these many months." In his pocket was an unused statement to be read in case the invasion failed.

Airborne operations

The success of the amphibious landings depended on the establishment of a secure lodgment from which to expand the beachhead to allow the build up of a well-supplied force capable of breaking out. The amphibious forces were especially vulnerable to strong enemy counterattacks before the build up of sufficient forces in the beachhead could be accomplished. To slow or eliminate the enemy's ability to organize and launch counterattacks during this critical period, airborne operations were used to seize key objectives, such as bridges, road crossings, and terrain features, particularly on the eastern and western flanks of the landing areas. The airborne landings some distance behind the beaches were also intended to ease the egress of the amphibious forces off the beaches, and in some cases to neutralize German coastal defence batteries and more quickly expand the area of the beachhead. The U.S. 82nd and 101st Airborne Divisions were assigned to objectives west of Utah Beach. The British 6th Airborne Division was assigned to similar objectives on the eastern flank. 530 Free French paratroopers from the British Special Air Service Brigade, were assigned to objectives in Brittany from 5 June to August. (Operation Dingson, Operation Samwest).


June 6, 1944 - OPERATION NEPTUNE

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