Normandy Invasion - D-Day, WWII, Allies (2024)

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Also known as: COSSAC, D-Day, Operation Overlord

Written by

John Keegan Sir John Keegan was a military historian, lecturer, prolific author, and long-time defence correspondent for the Daily Telegraph.He was knighted in 2000.

John Keegan

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The decision to go

May 1944 had been chosen at the conference in Washington in May 1943 as the time for the invasion. Difficulties in assembling landing craft forced a postponement until June, but June 5 was fixed as the unalterable date by Eisenhower on May 17. As the day approached and troops began to embark for the crossing, bad weather set in, threatening dangerous landing conditions. After tense debate, Eisenhower and his subordinates decided on a 24-hour delay, requiring the recall of some ships already at sea. Eventually, on the morning of June 5, Eisenhower, assured by chief meteorologist James Martin Stagg of a break in the weather, announced, “O.K. We’ll go.” Within hours an armada of 3,000 landing craft, 2,500 other ships, and 500 naval vessels—escorts and bombardment ships—began to leave English ports. That night 822 aircraft, carrying parachutists or towing gliders, roared overhead to the Normandy landing zones. They were a fraction of the air armada of 13,000 aircraft that would support D-Day.

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The landings

The airborne troops were the vanguard, and their landings were a heartening success. The American 82nd and 101st airborne divisions, dropping into a deliberately inundated zone at the base of the Cotentin Peninsula, suffered many casualties by drowning but nevertheless secured their objective. The British 6th Airborne Division seized its unflooded objectives at the eastern end more easily, and its special task force also captured key bridges over the Caen Canal and Orne River. When the seaborne units began to land about 6:30 am on June 6, the British and Canadians on Gold, Juno, and Sword beaches overcame light opposition. So did the Americans at Utah. The U.S. 1st Division at Omaha Beach, however, confronted the best of the German coast divisions, the 352nd, and was roughly handled by machine gunners as the troops waded ashore. During the morning, the landing at Omaha threatened to fail. Only dedicated local leadership eventually got the troops inland—though at a cost of more than 2,000 casualties.

The German response

Meanwhile, the German high command—in the absence of Rommel, who was home on leave—began to respond. Hitler was initially unwilling to release the armoured divisions for a counterattack. When he relented after midday, elements of the 21st Panzer Division drove into the gap between the British 3rd and Canadian 3rd divisions at Sword Beach and Juno Beach and almost reached the sea. Had they done so, the landings might have failed. Fierce resistance by British antitank gunners at Périers-sur-le-Dan turned the tide in late evening.

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The lodgment area established

On June 7 the beachhead consisted of three separate sectors: that of the British and Canadians, between Caen (not taken) and Bayeux; that of the U.S. V Corps, between Port-en-Bessin and Saint-Pierre-du-Mont; and that of the U.S. VII Corps, west of the Vire River behind Utah Beach. The narrow gap between Gold and Omaha at Port-en-Bessin was quickly closed, but it was not until June 12 that the American corps were able to join hands after a bitter battle to capture Carentan. The beachhead then formed a continuous zone, its deepest point being southwest of Bayeux, where the V Corps had driven nearly 15 miles (25 km) inland.

Meanwhile, work had been proceeding pell-mell to complete two artificial harbours, known by their code name, Mulberry, that were intended to off-load vehicles and supplies until the port of Cherbourg was secured. An outer breakwater of sunken ships for each harbour was in place by June 11. Floating piers, designed to rise and fall with the tides, were half-finished by June 19, when a heavy storm destroyed much of the material. The Americans then decided to abandon their Mulberry, while the British harbour was not in use until July. Most supplies meanwhile had to be beach-landed by assorted landing craft, landing ships, and amphibious trucks (DUKWs).

Stalemate, June–July 1944

Fighting in the bocage

Fighting inshore, the Allies also encountered difficulty in the dense hedgerow country known to the French as the bocage. Thanks to the success of the airborne landings, the flanks of the beachhead were firmly held, but efforts to break out of the centre were frustrated by fierce German resistance and counterattacks, particularly around Caen in the British-Canadian sector. A British armoured thrust at Villers-Bocage was defeated on June 13. A large-scale infantry offensive west of Caen, called Operation Epsom, was also defeated on June 25–29. There was gloom at SHAEF; it seemed that stalemate was descending. The gloom was deepened by Montgomery’s strategy. His plan was to draw German armour toward the British front and win a battle of attrition between tank forces. The successful German defense, however, led the Americans to doubt the plan’s viability.

In fact, the Germans were also depressed, for their bitter defense was using up men and equipment that could not be replaced. Moreover, the Americans were now able to profit from the deployment of most of the enemy’s armour against the British and break into the base of the Cotentin Peninsula and advance on Cherbourg. The last bastion in the heavily fortified city fell on June 28, and clearance of the port began at once.

Crisis in the German command

The setbacks brought about a crisis in the German high command, which in any case now suffered unforeseeable casualties. Dollmann, commander of the Seventh Army, died suddenly on June 28, just after the surrender of the main garrison in Cherbourg; his death was blamed on a heart attack, though it is quite likely he committed suicide. Rommel was severely injured when his car was strafed by a British fighter on July 17. Worst of all, Rundstedt confessed defeatism to Hitler, urged him to make peace, and was dismissed on July 2 along with Geyr, the commander of Panzer Group West. Geyr was replaced by the capable veteran Heinrich Eberbach. Rundstedt himself was replaced by Günther von Kluge, who soon came round to sharing Rundstedt’s doubts. On July 20 a conspiracy of officers (including former army chief of staff Ludwig Beck and reserve army chief of staff Claus, Count Schenk von Stauffenberg) who believed the only hope of securing a peace lay in Hitler’s removal made an attempt on his life at his East Prussian headquarters, Rastenburg. The failure of the July Plot led to Hitler’s taking draconian powers over the army and exacting terrible revenge on those suspected of complicity. Rommel was forced to commit suicide in October, and Kluge did so on August 18.

The German defense of Normandy had by then taken a turn for the worse. Though a large British armoured offensive west of Caen, Operation Goodwood, failed on July 18–19, the U.S. First Army conducted a bitter battle of attrition around Saint-Lô in the second and third weeks of July. Its success was to lay the basis for the long-awaited breakout.

Normandy Invasion - D-Day, WWII, Allies (2024)

FAQs

What allies were involved in the D-Day invasion? ›

The majority of troops who landed on the D-Day beaches were from the United Kingdom, Canada and the US. However, troops from many other countries participated in D-Day and the Battle of Normandy: Australia, Belgium, Czechoslovakia, Denmark, France, Greece, the Netherlands, New Zealand, Norway and Poland.

Why was the D-Day invasion crucial for the Allies? ›

The invasion, if successful, would drain German resources and block access to key military sites. Securing a bridgehead in Normandy would allow the Allies to establish a viable presence in northern Europe for the first time since the Allied evacuation from Dunkirk in 1940.

How the D-Day invasion helped the Allies win the war? ›

The war would not be over by Christmas. But D-Day had opened another major front, where the bulk of America's rapidly expanding army could at last be brought to bear. It led to the liberation of France, denying Germany any further exploitation of that country's economic and manpower resources.

What went wrong for the Allies on D-Day? ›

Disorganization, confusion, incomplete or faulty implementation of plans characterized the initial phases of the landings. This was especially true of the airborne landings which were badly scattered, as well as the first wave units landing on the assault beaches.

Why did the Allies choose Normandy? ›

After much deliberation, it was decided that the landings would take place on the long, sloping beaches of Normandy. There, the Allies would have the element of surprise. The German high command expected the attack to come in the Pas de Calais region, north of the river Seine where the English Channel is narrowest.

How many allies died on D-Day? ›

The first Allied cemetery in Europe was dedicated just two days after the D-Day invasion on June 8, 1944. Of the 4,414 Allied deaths on June 6, 1944, 2,501 were Americans. Allies suffered some 10,000 total casualties on D-Day itself.

What does D stand for in D-Day? ›

The term D-Day is used by the Armed Forces to refer to the beginning of an operation. The 'D' stands for 'Day', meaning it's actually short for 'Day-Day' (which is nowhere near as catchy).

Why was D-Day a turning point for the Allies? ›

D-Day, June 6, 1944, is still one of the world's most gut-wrenching and consequential battles, as the Allied landing in Normandy led to the liberation of France, which marked the turning point in the Western theater of World War II.

How did the Allies win WWII? ›

The Allies used their air and sea power to destroy the Axis's in a multi-layered campaign. This was the true battlefield of WWII: a massive air-sea super battlefield that stretched for thousands of miles. Victory in this super-battlefield led to victory in the war.

What would happen if the Allies lost D-Day? ›

“Had D-Day failed, there would have been an agonising reappraisal among the Americans who had pushed for a cross-channel invasion. Eisenhower would almost certainly have offered his resignation, it would almost certainly have had to be accepted.

What does "d-day" mean in slang? ›

Informal. any day of special significance, as one marking an important event or goal.

What is D-Day for dummies? ›

On June 6, 1944 the Allied Forces of Britain, America, Canada, and France attacked German forces on the coast of Normandy, France. With a huge force of over 150,000 soldiers, the Allies attacked and gained a victory that became the turning point for World War II in Europe.

What was Hitler's reaction to D-Day? ›

He had reacted with glee when the Allies launched their invasion of Normandy on June 6, 1944, convinced that the enemy would be so utterly smashed on the beaches that the defeat would knock the British and Americans out of the war. Then he could concentrate all his armies on the eastern front against Stalin.

Was D-Day successful for the Allies? ›

It ended with heavy casualties — more than 9,000 Allied soldiers were killed or wounded in those first 24 hours — but D-Day is largely considered the successful beginning of the end of Hitler's tyrannical regime.

Did anyone survive the first wave of D-Day? ›

The overwhelming majority of Allied servicemen survived the first wave of D-Day. Different landing beaches showed different levels of resistance. At Juno and Omaha, for example, beach defences and geography combined to make the attacks very difficult.

Who was the Allied commander at the D-Day invasion? ›

Gen. Dwight Eisenhower, Allied Expeditionary Force Supreme Commander.

How many Allied divisions in total took part in the invasion of D-Day? ›

3 British divisions took part in the D-Day invasion of Normandy. They included the 50th Infantry Division, 3rd Infantry Division, and the 6th Airborne Division. How many Allied divisions in total took part in the invasion. 9 (nine) Allied divisions in total took part in the invasion.

What did the Allies do to prepare for an invasion? ›

In addition to accumulating hundreds of thousands of soldiers and millions of tons of material in Britain, the Allies gathered hundreds of specialized landing craft in ports across southern England. These would play a critical role in delivering the Allied assault troops to the French beaches.

Did the Allies bomb France? ›

In 1944, the allies launched the Transportation Plan, a bombing campaign that sought to destroy French rail infrastructure used by German forces to move supplies and men around France. The bombing took aim at cities and targets across the country, from Marseille to Lyon up to Normandy.

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