So, on this 75th anniversary of the landing in Normandy, a re-posting of a logistics post from a couple of years ago.
You can read a lot about those landing here:
The Normandy invasion took place in the Bay of the Seine, on the south side of the English Channel between the Cotentin Peninsula and the port of Le Havre. Some fifty-five miles broad and twenty deep, its waters were shallow, had a considerable tidal range, and, when the wind blew from the northward, could be very choppy. The planned landing beaches covered about forty-five miles of the Bay's shoreline. Westernmost was "Utah" Area, stretching eight miles southward along the low-lying southeastern coast of the Cotentin Peninsula. Directly to the east was "Omaha" Area, covering twelve miles of generally hilly terrain. United States forces were assigned to take both of those areas, with important assistance from the navies of Great Britain and other Allies. British and Canadian troops would assault the areas code-named "Gold", "Juno", and "Sword", which ran twenty miles eastward from "Omaha". This sector ended at the mouth of the Orne River, some fifteen miles west of Le Havre, where the German Navy based a group of potentially very dangerous torpedo boats.
The actual landing beaches occupied a fraction of the width of each area, but were
intended to provide sufficient initial footholds to allow rapid reinforcement and expansion inland, with the attacking soldiers joining their flanks to create a continuous beachhead perimeter before the enemy could mount a major counterattack. Each area would be assaulted by approximately one army division, with initial landings being made by much smaller units at 6:30AM in the American areas and about an hour later in the British. Their arrival on the shore was to follow a bombardment by ships' guns and aircraft ordnance, kept relatively brief to maintain as much as possible of the element of surprise. As a result, German shore defenses frequently remained intact, and would prove troublesome to both the landing forces and ships offshore.
To protect the invasion zone's western extremity, and to facilitate the "Utah" landing
force's movement into the Cotentin Peninsula, the U.S. 82nd and 101st Airborne Divisions descended by parachute and glider in the small hours of "D-Day", 6 June 1944. Though badly scattered and lacking much of their equipment, these brave paratroopers kept the Germans occupied and helped ensure that the "Utah" Beach assault went relatively easily. The British and Canadian attacks, assisted by an air-dropped division on their eastern flank and a longer naval bombardment, generally also went well.
Not so in the "Omaha" area, where deep beaches backed by steep hills meant that the U.S. troops landing there were exposed to withering fire from enemy small arms, machine guns and artillery. Casualties were very heavy and the assult only succeeded after a day of brutal fighting, with warships coming in close to provide direct gunfire in support of the hard-pressed soldiers.
By nightfall on the sixth of June, the situation was favorable, even on Omaha. Entered the popular culture as THE "D-Day", a name it has retained ever since.
And by honor I mean thinking about what it took to mine the iron, smelt the metal, design and build ships, aircraft, landing craft, rifles, artillery pieces, tanks, bombs, bullets, drill for and produce and refine the petroleum products that powered the fleets of ships, air forces, tanks, trucks, grow and harvest the grains, raise the cattle and other food for the forces abroad and at home . . . to the often overlooked merchant shipping industry ships and crews who transported all these things to England, Italy, North Africa and throughout the Pacific, thereby sustaining not only the fleets, Marines, armies but also much of the civilian populations of countries like Great Britain.
For more background on U.S. logistics during WWII, you can get a version of the whole story at The Big 'L'--American Logistics in World War II:
A remark by a captured German soldier best summarizes the importance of logistics in the battle for Europe in World War II. As he was marched past one of the many roadside supply dumps that dotted the Normandy landscape in the wake of the invasion, he was heard to remark "I know how you defeated us. You piled up the supplies and then let them fall on us." He was right. The war in Europe was what the Germans called materialschlact, "matériel battle." It was a "matériel battle" on a scale greater than any other conflict in history, a contest pitting the industrial capacities of Germany and the United States against each other. In the end, triumph was the result of the ability, of the United States to mobilize its industrial capacity" to provide the instruments of war for its troops and those of its allies and to deliver them where and when they were needed--to pile them up and let them fall.
Logistics in the European Theater of Operations (ETO) is a massive and complicated subject, one that accounts for thousands of pages in the official histories of the war. Although these events are over a half century past, the fundamental issues that concerned World War II logisticians--how to know what you need and how to get it where you need it when you need it--are the same problems their successors face today. . .
The story of theater logistics in WWII is not a unitary one; rather, it is two distinct stories. The Pacific and European theaters of operation were each unique in their strategic geography and military situation. In the European theater, the basic logistical task was to mass strength in a secure forward base to support operations--both land and air--against a nearby enemy. The United States entered the war after the British had forestalled Hitler's plans for a cross-Channel invasion. Therefore, Great Britain afforded a large, secure staging ground for the buildup of combat power. Moreover, as an advanced industrial nation, Great Britain possessed the ports, rail lines, and other facilities to support a massive influx of material and personnel. This buildup would require large numbers of ships to transit a single, highly vulnerable line of communication, the Atlantic route from the United States to England.
With the notable exception of the Battle of the Atlantic, the war in Europe is largely an Army story. The Army provided the theater commander and virtually the entire theater logistical structure. ... (Barry Dysart, Chapter VII)
Here's quick summary of what D-Day meant in terms of logistics:
Sustainment of forces in the field is a challenge in any war. D-Day and its aftermath was the creation of a huge number of unsung heroes.
Give them a little thought and a tip of the hat.