First Battle of the Marne

The  was a battle of the First World War fought from 5 to 12 September 1914. The German army invaded France with a plan for winning the war in 40 days by occupying Paris and destroying the French and British armies (Allies/Entente). The Germans had initial successes in August. They were victorious in the Battles of Mons and the Frontiers and overran a large area of northern France and Belgium. In what is called the Great Retreat the Germans pursued the retreating Franco-British forces more than 250 km (160 mi) southward. The French and British halted their retreat in the Marne River valley while the Germans advanced to 40 km (25 mi) from Paris.

With the battlefield reverses of August, Field Marshal John French, commander of the British Expeditionary Force (BEF), lost faith in his French allies and began to plan for a British retreat to port cities on the English Channel for an evacuation to Britain. However, the French commander Joseph Joffre maintained good order in his retreating army and was able to reinforce it by bringing in additional manpower from his eastern flank and integrating military reserve units into the regular army. By early September, the Franco–British forces outnumbered the Germans who were exhausted after a month-long campaign, had outrun their supply lines, and were suffering shortages. On 3 September the military governor of Paris,, perceived that the German right flank was vulnerable and positioned his forces to attack.

On 4 September Joffre gave the order to launch a counteroffensive. The battle took place between Paris and Verdun, a west to east distance of 230 km (140 mi). The point of decision and the heaviest fighting was in the western one-half of that area. By 9 September, the success of the Franco–British counteroffensive left the German 1st and 2nd Armies at risk of encirclement, and they were ordered to retreat to the Aisne River. The retreating armies were pursued by the French and British. The German armies ceased their retreat after 65 km (40 mi) on a line north of the Aisne River, where they dug in on the heights and fought the First Battle of the Aisne. The German retreat from 9 to 12 September marked the end of the German attempt to defeat France quickly. Both sides next commenced reciprocal operations to envelop the northern flank of their opponent in what became known as the Race to the Sea which culminated in the First Battle of Ypres and led to a bloody four-year long stalemate of trench warfare on the Western Front of World War I.

The Battle of the Marne from September 5 to 12 resulted in an estimated 250,000 French casualties, 12,733 British casualties and 298,000 German casualties. Holger Herwig called the Battle of the Marne the most important land battle of the 20th century, while another analyst, John J. Tierney, Jr, argued it was the most important battle in history. The battle is described in French folklore as the "miracle on the Marne."

Quotes

 * I don't know who won the Battle of the Marne. But if it had been lost, I know who would have lost it.
 * Marshal Joseph Joffre, quoted in Sewell Tyng, The Campaign of the Marne (1935), p. 350


 * The driven and defeated line stood at last almost under the walls of Paris; and the world waited for the doom of the city. The gates seemed to stand open; and the Prussian was to ride into it for the third and the last time: for the end of its long epic of liberty and equality was come. And still the very able and very French individual on whom rested the last hope of the seemingly hopeless Alliance stood unruffled as a rock, in every angle of his sky-blue jacket and his bulldog figure. He had called his bewildered soldiers back when they had broken the invasion at Guise; he had silently digested the responsibility of dragging on the retreat, as in despair, to the last desperate leagues before the capital; and he stood and watched. And even as he watched the whole huge invasion swerved.Out through Paris and out and round beyond Paris, other men in dim blue coats swung out in long lines upon the plain, slowly folding upon Von Kluck like blue wings. Von Kluck stood an instant; and then, flinging a few secondary forces to delay the wing that was swinging round on him, dashed across the Allies' line at a desperate angle, to smash it in the centre as with a hammer. It was less desperate than it seemed; for he counted, and might well count, on the moral and physical bankruptcy of the British line and the end of the French line immediately in front of him, which for six days and nights he had chased before him like autumn leaves before a whirlwind. Not unlike autumn leaves, red-stained, dust-hued, and tattered, they lay there as if swept into a corner. But even as their conquerors wheeled eastwards, their bugles blew the charge; and the English went forward through the wood that is called Creçy, and stamped it with their seal for the second time, in the highest moment of all the secular history of man.But it was not now the Crecy in which English and French knights had met in a more coloured age, in a battle that was rather a tournament. It was a league of all knights for the remains of all knighthood, of all brotherhood in arms or in arts, against that which is and has been radically unknightly and radically unbrotherly from the beginning. Much was to happen after—murder and naming folly and madness in earth and sea and sky; but all men knew in their hearts that the third Prussian thrust had failed, and Christendom was delivered once more. The empire of blood and iron rolled slowly back towards the darkness of the northern forests; and the great nations of the West went forward; where side by side as after a long lover's quarrel, went the ensigns of St. Denys and St. George.
 * G. K. Chesterton, The Crimes of England (1915), Ch. X; quoted in The Oxford Book of English Prose (1925), no. 590