On June 6, 1944, a pivotal moment in World War II history unfolded as Allied forces launched a massive invasion of Nazi-occupied France. Soldiers from the United States, Britain, and Canada braved the English Channel in a meticulously coordinated operation to break through the heavily fortified German lines along Normandy’s beaches. Their objective was clear: to open a western front and begin the liberation of Europe from Axis domination.
The scale of the operation was unprecedented—over 156,000 troops stormed the coast, supported by thousands of ships and aircraft in one of the largest amphibious assaults ever undertaken. Months of detailed planning went into every element of the attack, from deceptive maneuvers meant to mislead German forces to the timing of tides and moonlight. More than a single battle, the Normandy landings marked the start of Germany’s steady retreat from Western Europe.
The following essential facts about D-Day reveal why this monumental operation still captures the world’s attention and stands as a testament to courage and determination.
Nearly 160,000 Allied troops were involved in the D-Day landings
The D-Day landings, which significantly influenced the outcome of the Second World War, involved a massive force of well over 100,000 Allied troops. Of the approximately 160,000 soldiers who participated, 83,000 were British and Canadian, while 73,000 were American. In contrast, the German forces consisted of about 50,000 troops.
As Operation Overlord, or the Battle of Normandy, progressed, more than two million Allied soldiers contributed to the liberation of France.
Operation Bodyguard came before Operation Overlord
Before the D-Day landings, the Allies developed many strategies to ensure their success, including tricking the Germans through Operation Bodyguard. This plan was meant to fool German forces into thinking the main Allied attack would happen at Pas-de-Calais instead of northwestern France. As a result, the Germans moved troops and supplies away from the real D-Day landing sites.
One key part of Operation Bodyguard was Operation Copperhead, This involved hiring a lookalike to pose as Bernard Montgomery, a top British officer, in different Allied territories. The idea was to make the Germans question whether Montgomery was involved in D-Day planning since his supposed travels would suggest he wasn’t overseeing the operation. The impersonator also helped spread false information to support the larger deception strategy.
D-Day was initially slated to occur on June 5, 1944
While June 6, 1944, is etched in history, D-Day wasn’t initially planned for that date. The landings were originally scheduled for June 5, but were delayed by 24 hours after Irish postmistress Maureen Flavin Sweeney reported an approaching storm.
Supreme Allied Commander Gen. Dwight D. Eisenhower made the critical decision to postpone the operation. This choice not only contributed to the mission’s success, but also saved countless Allied lives.
Thousands of ships and landing craft were involved in D-Day
D-Day was centered around amphibious landings, which means the troops needed vessels to get across the English Channel.
It’s reported that nearly 7,000 ships and landing craft were used to ensure the success of the landings. Of that total, 80 percent were supplied by the British and 16.5 percent came from the United States.
What does the ‘D’ in D-Day stand for?
For nearly 80 years since the Normandy landings, people have wondered: what does the “D” in D-Day actually mean? Surprisingly, the answer isn’t very exciting.
The “D” simply stands for “Day,” so “D-Day” literally means “Day-Day“. Not exactly the most natural-sounding name, right?
A fatal live-fire rehearsal
A lot of preparation went into the D-Day landings, much of which involved training troops for what they could expect upon arriving in German-occupied France. Several coastal villages were taken over and numerous rehearsals were held.
One practice run was the fatal Exercise Tiger, which resulted in the deaths of over 700 Allied troops. Many of the casualties were killed during a live-fire exercise, while many others perished during what became known as the Battle of the Lyme, during which E-boats operated by the Kriegsmarine attacked Tank Landing Ships (LST) in the English Channel.
What obstacles did the Allies face on the landing beaches?
Knowing the Allies were likely to attack France, the Germans fortified the coast with obstacles designed to slow down or kill invading troops.
One of the most famous defenses was the Czech Hedgehog—X- or L-shaped barriers made of metal or wood that could stop tanks from moving forward. In addition to these, the Germans placed tall wooden posts called Holzpfähle, standing 13 to 16 feet high, scattered across beaches and fields. Hidden throughout Normandy were teller mines—flat, disc-shaped explosives filled with 5.5 kilograms of TNT, set to explode under the weight of a soldier or vehicle.
No one wanted to wake the Führer…
As mentioned earlier, the Germans knew an Allied invasion was coming, but that didn’t mean they were ready to do everything possible to stop it. What’s one big example? Waking the Führer from his slumber.
Operation Overlord began in the early morning hours of June 6, 1944. When word of the landings reached the Führer’s headquarters—the Wolf’s Lair—at 4:00 AM, he was still asleep. Out of fear of his temper, no one woke him up. Without his approval, German forces didn’t take action, allowing Allied troops to move inland without immediate resistance.
By the time the Führer finally gave the order, it was already several hours too late.
Sixteen soldiers received the Medal of Honor
Sixteen American servicemen received the Medal of Honor for extraordinary acts of bravery during the D-Day invasion and the fierce battles that followed in Normandy. Of these heroes, nine were recognized posthumously for making the ultimate sacrifice. Four medals were awarded specifically for courage displayed on June 6, 1944: Pvt. Carlton W. Barrett, First Lt. Jimmie W. Monteith, Jr., Technician Fifth Grade John J. Pinder, Jr., and Brigadier General Theodore Roosevelt, Jr.
Among them, Roosevelt’s story stands out not only for his gallantry but also because he was the eldest son of President Theodore Roosevelt. On D-Day, he took charge at Utah Beach, moving fearlessly among the landing troops while under intense enemy fire. His decisive leadership helped organize the chaotic beachhead and secure a crucial foothold for the Allied push into France—contributions that were instrumental to the operation’s overall success.
Lt. Herbert Denham ‘Den’ Brotheridge
Have you ever wondered who the first Allied casualty of the D-Day landings was? According to reports, it was Lt. Herbert Denham “Den” Brotheridge, an officer in the British Army.
Serving with the 2nd Battalion, Oxfordshire and Buckinghamshire Light Infantry, he was killed while taking part in Operation Tonga, a mission undertaken by the British 6th Airborne Division to take control of and destroy the Merville Gun Battery. The site was approximately eight miles from Sword Beach.
While taking on German machine gunners, Brotheridge was hit in the back of the neck by enemy fire. While attempts were made to render medical aid, he perished.
Playing the bagpipes
Several notable individuals participated in the D-Day landings, but none were as unique as “Piper Bill” Millin, whose music led British Commandos from Sword Beach to Pegasus Bridge.
Millin played the bagpipes under Simon Fraser, 15th Lord Lovat, who’d been appointed the commander of the 1st Special Service Brigade (1st SSB). Under a hail of enemy and friendly fire, the former played his music, walking the entire length of Sword Beach three times, before moving toward the key bridge area.
How did he survive without a weapon, you ask? Well, according to a German soldier who spoke to Millin decades later, the enemy forces thought he was “off your head” – they didn’t want to waste their bullets on him!
Outnumbering the Luftwaffe 30:1
Approximately 11,000 Allied aircraft participated in the D-Day landings, a sizeable number, given the dwindling numbers of the Luftwaffe.
According to the BBC, the Allies outnumbered the Germans 30-to-one in the air. Given this, the latter failed to down any of the former’s aircraft in air-to-air combat.
How many casualties were suffered?
On June 6, 1944, alone, several thousand casualties were suffered by both sides. The Allies inflicted between 4,000 and 9,000 on the Germans, while they themselves experienced just over 12,000. According to the National WWII Museum, the breakdown for the Allies was:
- United States – 8,230
- United Kingdom – 2,700
- Canada – 1,074
Much of the footage was lost in the English Channel
Have you ever wondered why so little in the way of video footage exists of the D-Day landings? Well, the reason is it was accidentally dumped in the English Channel – true story.
American film director John Ford was tasked with capturing footage of the landings on Omaha Beach, with the assistance of the US Coast Guard. The majority of the film reels were subsequently placed in a duffel bag bound for Britain. However, on the way, the bag was accidentally dropped into the English Channel by Maj. W.A. Ullman, a junior officer.