Normandy landings

• 1. Introduction

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  On the 6th of June 1944, roughly 160,000 troops crossed the English Channel in a single day. They came ashore along a 50-mile stretch of French coastline divided into five sectors: Utah, Omaha, Gold, Juno, and Sword. By the end of that day, at least 10,000 of them were casualties, with 4,414 confirmed dead. The Germans suffered between 4,000 and 9,000 of their own. And yet the Allies held the beaches. The Normandy landings, codenamed Operation Neptune and part of the larger Operation Overlord, would become the largest seaborne invasion in history. How did a plan of such staggering complexity come together? What almost derailed it at the last moment? And why, with tens of thousands of lives on the line, did some of the most critical decisions come down to a weather forecast from the west coast of Ireland?

• 2. The Road to Overlord

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  Soviet leader Joseph Stalin had been pressing his Western allies for a second front in Europe since the German Army invaded the Soviet Union in June 1941. In late May 1942, the Soviet Union and the United States jointly announced a "full understanding" on creating that front in Europe in 1942. It never happened. British Prime Minister Winston Churchill persuaded US President Franklin D. Roosevelt to postpone, arguing the Allies lacked the forces. Instead, the Western Allies turned to the Mediterranean, winning the campaign in North Africa by mid-1943, invading Sicily in July, and entering the Italian mainland in September. The decision for a cross-channel invasion was finally locked in at the Trident Conference in Washington in May 1943. At the Tehran Conference in November of that year, Roosevelt and Churchill promised Stalin the long-delayed second front would open in May 1944. The Allies considered four possible landing sites: Brittany, the Cotentin Peninsula, Normandy, and the Pas-de-Calais. The Pas-de-Calais was the closest point in continental Europe to Britain, making it the most fortified, but it offered little room to expand. Normandy, by contrast, allowed simultaneous threats against Cherbourg, ports in Brittany, and an overland push toward Paris. Its lack of port facilities would be solved by constructing artificial Mulberry harbours. The initial draft of the invasion plan was accepted at the Quebec Conference in August 1943, calling for amphibious landings by three divisions on a 25-mile front. Generals Eisenhower and Montgomery, first seeing the plan on the 31st of December 1943, insisted on expanding it to five divisions landing on a 50-mile front, with airborne descents by three additional divisions. That expansion forced a delay from May to June, because acquiring the extra landing craft took time. American Admiral Ernest King had allocated only 2,493 landing-ships and landing craft out of the 31,123 he had available.

• 3. The Art of Deception

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  Operation Bodyguard was the umbrella under which the Allies ran a sprawling campaign to keep Germany guessing about where and when the blow would fall. One of its main components, Fortitude North, used fake radio traffic to suggest an attack on Norway was coming. The more elaborate Fortitude South created an entirely fictitious army group, the First United States Army Group, supposedly stationed in Kent and Sussex under Lieutenant General George S. Patton. Genuine radio messages from the 21st Army Group were routed through landlines to Kent and then broadcast, so German signals intelligence would place Allied troops there. Patton himself remained in England until the 6th of July, prolonging the deception by suggesting a second invasion at Calais was still possible. The nights before the landings were filled with smaller tricks. A group of Special Air Service operators dropped dummy paratroopers over Le Havre and Isigny. In Operation Taxable, No. 617 Squadron RAF dropped strips of metal foil, nicknamed "window," near Le Havre, producing radar returns that German operators read as an approaching naval convoy. Small vessels towing barrage balloons reinforced the illusion. A similar operation near Boulogne-sur-Mer was run by No. 218 Squadron RAF in Operation Glimmer. Many German radar stations along the French coast had already been destroyed in the run-up to the landings. When German intelligence correctly read an increase in BBC radio activity on the 5th of June as a sign that invasion was imminent, most units ignored the warning because of the volume of earlier false alarms. The French Resistance also played a part, alerted through coded messages personnels transmitted by BBC French service broadcasts from London, where snippets of poetry or random sentences masked the few messages that actually mattered. A 1965 report from the Counter-insurgency Information Analysis Center recorded that 52 locomotives were destroyed on the 6th of June alone in the southeast of France, and the railway line was cut in more than 500 places. Normandy was isolated as of the 7th of June.

• 4. The Weather Decision

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  Eisenhower had tentatively chosen the 5th of June as D-Day. The planners required a specific combination of moon phase, tidal conditions, and time of day that made only a few days each month usable. They wanted a full moon for visibility, a tide coming in, and a landing shortly before dawn with the water midway between low and high tide. On the 4th of June, none of those tactical requirements mattered because the weather made a landing physically impossible. High winds, heavy seas, and low cloud cover ruled out both landing craft operations and aircraft strikes. The forecast reporting the storms had been sent from a weather station on the western coast of Ireland. Group Captain James Stagg of the Royal Air Force met Eisenhower on the evening of the 4th of June with a different piece of news: his meteorological team predicted the weather would improve enough to allow the invasion to proceed on the 6th of June. The next available window with acceptable tidal conditions was 18-the 20th of June, two weeks away. Delaying to those dates would have required recalling men and ships already positioned to cross the Channel, raising the risk that the invasion plans would be detected. A major storm did batter the Normandy coast from the 19th to the 22nd of June, which would have made the beach landings impossible on those alternative dates. Eisenhower made the call to go on the 6th. The German side had far less weather information than the Allies, because Allied control of the Atlantic denied German meteorologists access to incoming weather data. The Luftwaffe meteorological centre in Paris was forecasting two weeks of stormy weather, which meant many Wehrmacht commanders had left for war games in Rennes. Field Marshal Erwin Rommel had returned to Germany for his wife's birthday and to petition Hitler personally for additional Panzer divisions.

• 5. The German Defences

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  Hitler had ordered the construction of fortifications along the entire Atlantic coast from Spain to Norway after Allied raids on St Nazaire and Dieppe in 1942. He envisioned 15,000 emplacements manned by 300,000 troops. Shortages of concrete and manpower meant most of those strongpoints were never built; shortly before D-Day, Rommel reported that construction was only 18 per cent complete in some areas. The Pas-de-Calais was the most heavily defended stretch. In Normandy, the best fortifications were at the port facilities at Cherbourg and Saint-Malo. Rommel ordered wooden stakes, metal tripods, mines, and large anti-tank obstacles placed on the beaches. He expected the Allies to land at high tide, so many obstacles were positioned at the high water mark. He tripled the number of mines along the coast and arranged for booby-trapped stakes known as Rommelspargel, or Rommel's asparagus, to be placed in fields and meadows to deter airborne landings. The German force itself was weakened by the demands of the Eastern Front. During the Soviet Dnieper-Carpathian offensive, the German High Command had been forced to transfer the entire II SS Panzer Corps from France, consisting of the 9th and 10th SS Panzer Divisions, along with the 349th Infantry Division, 507th Heavy Panzer Battalion, and two Assault Gun Brigades. In total, Germany's forces in France lost 45,827 troops and 363 tanks and assault guns to those transfers. Seven of the eleven Panzer or Panzergrenadier divisions in France were not fully operational in early June 1944. The Luftwaffe could field only 815 aircraft over Normandy on D-Day. The Allies had 9,543. A debate over armoured reserves also divided German command: Rommel wanted tanks stationed as close to the coast as possible, reasoning that Allied air supremacy would prevent large-scale movement once the invasion was underway. General Geyr argued for massing Panzer formations around Paris and Rouen, deploying them only once the main Allied beachhead was identified. Hitler made the final decision to split control, leaving three Panzer divisions under Geyr, giving Rommel operational control of three more, and keeping four divisions as his own strategic reserve, not to be moved without his direct orders.

• 6. Airborne and Naval Strike

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  The invasion began shortly after midnight on the morning of the 6th of June. The first Allied action was a glider assault at 00:16 that captured both the Caen Canal bridge and the Orne river bridge, later renamed Pegasus Bridge and Horsa Bridge, taken intact with light casualties by the Oxfordshire and Buckinghamshire Light Infantry Regiment. American airborne operations began with pathfinders arriving at 00:15. Navigation was difficult through thick cloud, and only one of five intended drop zones was accurately marked. Over 13,000 paratroopers from the 82nd and 101st Airborne Divisions were delivered by Douglas C-47 Skytrains of the IX Troop Carrier Command. Many planes flew so low that they came under both flak and machine-gun fire; some paratroopers were killed on impact because their parachutes had no time to open; others drowned in fields that the Germans had deliberately flooded. BBC war correspondent Robert Barr described paratroopers loading up with "sheathed knives strapped to their ankles; tommy guns strapped to their waists; bandoliers and hand grenades, coils of rope, pick handles, spades, rubber dinghies hung around them." Barr noted it was the first combat jump for every one of them, even those who had boarded aircraft twenty, thirty, or forty times before. After 24 hours, only about 2,500 men of the 101st and 2,000 of the 82nd were under the control of their divisions, roughly a third of the force dropped. The wide dispersal of paratroopers, though unintended, confused German commanders and fragmented their response. At sea, the invasion fleet comprised 6,939 vessels drawn from eight navies, including 1,213 warships, 4,126 landing craft, 736 ancillary craft, and 864 merchant vessels. Historian Correlli Barnett described the naval planning as a "never surpassed masterpiece." Overall command rested with British Admiral Sir Bertram Ramsay, who had previously overseen the Dunkirk evacuation. In total, 195,700 naval personnel participated, with 112,824 from the Royal Navy and 52,889 American. Minesweepers began clearing channels after midnight and finished just after dawn without encountering the enemy. More than 2,200 British, Canadian, and US bombers attacked targets along the coast beginning around midnight, though the coastal attack was largely ineffective at Omaha because low cloud cover made assigned targets difficult to see.

• 7. Five Beaches

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  Utah Beach saw the best outcome of the day. Members of the 8th Infantry Regiment of the 4th Infantry Division were the first to land at 06:30, pushed roughly 2,000 yards south of their intended zone by strong currents. That error turned out to be fortunate: the unintended site had only one nearby strongpoint rather than two, and bombers had struck the defences from lower than their prescribed altitude, inflicting more damage than expected. Brigadier General Theodore Roosevelt Jr., the first senior officer ashore, decided to "start the war from right here" and redirected all further landings to the new site. The 4th Infantry Division landed 21,000 troops at a cost of only 197 casualties. Omaha was the opposite. The 1st Infantry Division and 29th Infantry Division faced the 352nd Infantry Division rather than the lighter force intelligence had expected. Bombers delayed releasing their loads for fear of hitting the landing craft, leaving beach obstacles largely undamaged. DD tanks of two companies of the 741st Tank Battalion were dropped 5,000 yards offshore; 27 of the 32 sank, with the loss of 33 crew. Men had to wade 50-100 meters in neck-high water under fire. Casualties at Omaha were around 2,000. By late morning, barely 600 men had reached higher ground. At Gold Beach, three of the four guns in the Longues-sur-Mer battery were disabled by direct hits from two cruisers at 06:20. The 75 mm gun at the Le Hamel strongpoint kept firing until 16:00, when an Armoured Vehicle Royal Engineers tank put a demolition charge through its rear entrance. Company Sergeant Major Stanley Hollis earned the only Victoria Cross awarded on D-Day for his actions, including attacking two pillboxes at the Mont Fleury high point. Allied casualties at Gold were estimated at 1,000. At Juno Beach, the landing was delayed by choppy seas, leaving men to arrive ahead of their armour. Casualties while disembarking were heavy. Elements of the 9th Canadian Infantry Brigade advanced to within sight of the Carpiquet airfield by late afternoon, but withdrew for the night when supporting armour ran low on ammunition; the airfield was not captured until a month later. Casualties at Juno were 961 men. At Sword Beach, 21 of 25 DD tanks of the first wave reached shore safely. The 1st Special Service Brigade arrived piped ashore by Private Bill Millin, personal piper to Brigadier Simon Fraser, the 15th Lord Lovat. French forces under Commander Philippe Kieffer, the first French soldiers to arrive in Normandy, cleared the strongpoint at the casino at Riva Bella. At 16:00, the 21st Panzer Division launched a counter-attack between Sword and Juno that nearly reached the Channel before being stopped by the British 3rd Division. Casualties at Sword were estimated as high as 1,000.

• 8. Aftermath and Legacy

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  By the end of June, 875,000 men had disembarked through the Normandy beachheads. The five beachheads were not connected until the 12th of June, by which time the Allies held a front roughly 97 km long and 24 km deep. Caen, a major objective from the first day, was not completely captured until the 21st of July. German forces retreated east across the Seine on the 30th of August 1944, marking the close of Operation Overlord. Civilian casualties on D-Day and the following day are estimated at 3,000. Several factors explained the Allied success. German preparations along the Atlantic Wall were incomplete, with Rommel reporting only 18 per cent completion in some areas. Operation Fortitude's deceptions left the Germans defending a vast stretch of coastline. Allied air supremacy prevented German reconnaissance of British preparations and blocked effective bomber strikes in return. The French Resistance's rail sabotage isolated the Normandy region from German reinforcement. Indecisiveness in the German high command and a complicated chain of command that required Feuchtinger to wait until nearly 09:00 for orders to commit his 21st Panzer Division also played a part. The Normandy American Cemetery and Memorial stands today in Colleville-sur-Mer, near Pointe du Hoc, whose terrain of bomb craters and concrete bunkers remains largely unchanged from 1944. The Juno Beach Centre, funded by the Canadian federal and provincial governments, France, and Canadian veterans, opened in 2003. The British Normandy Memorial above Gold Beach, designed by architect Liam O'Connor, opened in 2021.