The Battle of the Marne

Pont-à-Mousson, Nomeny, Réméréville, Lunéville, Baccarat, Raon-l’Etape, and St. Dié were evacuated in rapid succession. Before the war fell into the entrenched lines which were to hold with little change for four years, most of Lorraine up to the old frontier and a long slice of Alsace had been recovered. But with what wounds may be read, for instance, in the report of the French Commission of Inquiry into the devastation wrought by the enemy in the department of Meurthe and Moselle. As though the destruction of farmsteads and villages in course of the fighting were not sufficient, the Bavarian infantry had been guilty at many places of almost incredible acts of ferocity. At Nomeny, the 2nd and 3rd Bavarian regiments, after sacking the village, set it on fire, and then, as the villagers fled from their cellars, shot them down—old men, women, and children—50 being killed and many more wounded. At Lunéville, during the three weeks’ occupation, the Hôtel de Ville, the Synagogue, and about seventy houses were burned down with torches, petrol, and other incendiary apparatus; and 17 men and women were shot in cold blood in the streets. Under dire threats, signed shamelessly by General Von Fosbender, a “contribution” of 650,000 francs was paid by the inhabitants. On August 24, practically the whole of the small town of Gerbéviller was destroyed by fire (more than 400 houses), and at least 36 civilians, men and women, were slaughtered. At Baccarat, 112 houses were burned down, after the whole place had been pillaged under the supervision of General Fabricius, commanding the artillery of the XIV Baden Corps, and other officers. This feature of the campaign cannot be ignored in our chronicle. Good men had supposed war itself to be the uttermost barbarism; it was left to the disciplined armies of the Hohenzollern Empire to prove that educated hands may lower it to depths of wickedness unimagined by the Apache and the Bashi-Bazouk.

On September 18, General Curières de Castlenau was made Grand Officer of the Legion of Honour on the ground that, “since the beginning of the war, his army has fought without cessation, and he has obtained from his troops sustained efforts and important results. General Castlenau has had, since the beginning of the campaign, two sons killed and a third wounded; nevertheless, he continued to exercise his command with energy.”

CHAPTER XI

SUMMING-UP

The battle of the Marne closed a definite phase of the Great War, and perhaps—in so far as it was marked by open and rapid movement, and as it finally exposed certain gross military errors—a phase of warfare in general. A fresh examination of the plans of the preceding years and the events of the preceding month immensely enhances the interest of the whole development; for it shows the real “miracle of the Marne” to have been an uprush of intelligence and patriotic will in which grave faults of strategy and tactics were corrected, and the victory to be the logical reward of a true conception, executed with unfailing skill through a new instrument created while the conditions of the struggle were being equalised. In whatever sense we may speak of a “greatest” battle of history, this was assuredly, of all clashes of force, that in which reason was most conspicuously vindicated.

Insanely presumptuous as was her ambition of reducing France, Russia, and Britain, Germany had at the outset some remarkable advantages. Chief among these must be counted the power of surprise, due to her long secret preparation, and a complete unity of command in face of dispersed Allies. The German forces concentrated on the west were not numerically superior to those of France, Britain, and Belgium; their effective superiority was considerable. Half of the active corps, which alone the French expected as troops of shock, were doubled with thoroughly trained reserve formations, giving a mass of attack of 34 corps, instead of 22, a difference larger than the two armies of the enveloping movement. Their strength was also increased by a clear superiority in several branches of armament and field service (the French field-gun and the use by the Allies of the French railways being notable exceptions), and in some particulars of tactical practice, especially the prudent use of field defences. The basic idea being to strike France down before Russia and Britain could effectually interfere, speed was a principal condition of success; and the plan of the Western campaign was probably the only one on which it could be realised. One-third of the whole force was to hold the old Franco-German frontier in a provisional defence, while one-third attacked through Luxembourg and the Belgian Ardennes, and the remainder was thrown across the Meuse and the open plain of Flanders, toward the French capital. This unprecedented enlargement of the offensive front, the outstanding feature of the plan, secured the most rapid deployment of the maximum forces; it alone could yield the great element of surprise; it alone provided the opportunity of envelopment dear to the German military mind. Its boldness, aided by terrorism in the invaded regions, astounded the world, and so seemed to favour the scheme of conquest. It might ultimately provoke a full development of British power; even in case of failure, it would cripple France and Belgium for many years. Its immediate weakness arose from the wide extension of forces not larger, except at certain points, allowing no general reserve and no large reinforcement, and from the necessity of great speed. The plan ignored many possibilities, from the Alps to Lille; once in motion, however, it could not be considerably or rapidly changed. Berlin, confident in the superiority of the war-machine to which it had devoted its best resources and thought, believed there would be no delay and no need of change.

France had been inevitably handicapped by the need of renouncing any initiative that could throw doubt upon her moral position, by the independence of her British and Belgian Allies, and by uncertainty as to Italy. This last doubt was, however, quickly removed; the Belgian Army delayed the invasion by a full week; and our “Old Contemptibles” gave most precious aid. A united Command at that time might have done little more than strengthen the instrument and confirm the doctrine whose imperfections we have traced. The instrument was inferior not only in effective strength, not only in some vital elements of arms and organisation, but in the system and spirit of its direction. The doctrine of the offensive, general, continuous, and unrestrained, had become an established orthodoxy during the previous decade, when the Russian alliance and the British Entente were fixed, when service was extended to three years, the 75 mm. gun was perfected, and a new method of railway mobilisation promised that the armies would be brought into action at least as rapidly as those of the enemy. Before a shot was fired, it had prejudiced the military information services—whence the scepticism of the Staff as to a large German movement west of the Meuse, and as to the German use of army corps of reserve in the first line; whence the ignorance of the German use of aeroplanes and wired entrenchment. No answer was prepared to the German heavy artillery. While unable to create the means to a successful general offensive, the French Command had discounted, if not positively discredited, modern methods of defence and delaying manœuvre, methods peculiarly indicated in this case, since France had the same reasons for postponing a decision as Germany had for hastening it. The only hope of the Allies at the outset lay in a combination of defence and manœuvre: there was no adequate defence, and no considerable manœuvre, but only a general headlong attack on a continuous line. Of the consequences of this lamentable beginning, an accomplished and sober French officer says: “It is just to speak of the Battle of the Frontiers as calamitous, for this battle not only doomed to total or partial ruin nine of our richest departments: insufficiently repaired by the fine recovery on the Marne, it weighed heavily upon the whole course of the war. It paralysed our strategy. From September 1914, our High Command was necessarily absorbed in the task, first, of limiting, then of reducing, the enormous pocket cut in our territory. Ever obsessed by the fear of abandoning to devastation a new band of country, we were condemned for nearly four years to a hideous trench warfare for which we were infinitely less prepared and less apt than the invader, and that we were able to sustain only by force of heroism.”80 Any one of the errors that have been indicated would have been grave; in combination, they are accountable for the heavy losses of the three abortive inroads into Alsace, Lorraine, and the Ardennes, and for the dispositions which necessitated the long retreat from the north. That the German armies suffered in these operations is, of course, to be remembered; but for France it was more urgent to economise her strength. In strategy infatuated, in tactics reckless, in preparation unequal to the accomplishment of its own designs, the then French Command must be held responsible in large measure for the collapse of the national forces in the first actions of the campaign.

Joffre, who had been named Generalissimo designate three years before, almost by accident, who was an organiser rather than a strategist, had inherited, with the imperfect instrument, the imprudent doctrine and plan. There was not the time, and he was hardly the man, to attempt radically to change them; nor has he yet recognised in words that there was any large strategical error to correct. But the facts speak clearly enough: from the evening of August 23, when the general retreat from the north was ordered, we enter upon a profoundly changed situation, in which the native shrewdness and solid character of the French Commander-in-Chief are the dominant factor. The defence that should have been prepared could not be extemporised. The armies must be disengaged and re-formed. A large sacrifice of territory was therefore unavoidable. To delay the critical encounter till the balance of forces should be rectified was the first requirement. On August 24, Headquarters issued a series of tactical admonitions, prelude to a clean sweep of no less than thirty-three generals and many subordinate officers. Next day followed the “General Instruction” in which will be found the germ of the ultimate victory. The rule of blind, universal, unceasing offensive disappeared, without honour or ceremony; arose that of manœuvre; informed, elastic, resourceful, prudent but energetic.

At once there was precipitated a conception which governed not only the battle of the Marne, but the whole after-development of the war. There must be no more rash adventures on the east; from Belfort to Verdun, the front would be held defensively, with a minimum of strength, to fulfil the purpose for which its fortifications were built, and to protect the main forces, which would operate henceforth in the centre and west. The importance of the north-west coast, and the fact that Kluck was not approaching it, plainly suggested the creation of a new mass of manœuvre on this side to menace the German flank: this new body was Maunoury’s 6th Army. These two features of the Allied riposte—defence on the east, offence from the west—were to be permanent. The French centre must be strengthened to bear the impact of Bülow, the Saxons, and the Duke of Würtemberg. Foch’s Army, created to this end, to come in between those of d’Espérey (Lanrezac’s successor) and de Langle, had the further effect of preserving the full offensive strength of the 5th Army. For these purposes, large numbers of men had to be transferred from the east to the west and centre. Joffre at first hoped to stand on the Somme, and then on the Oise. But the new forces were not ready; the defence of the east was not secured; the British Army was momentarily out of action; Kluck threatened the Allied communications; the line was a hazardous zigzag. The Generalissimo would not again err on the side of premature attack.

The pursuit was not an unbroken course of victory for the invaders. Before the Gap of Charmes, on August 24–26, Castlenau and Dubail administered the first great German set-back of the war. At the same time, the Prince Imperial received a severe check at Etain; and, although Smith-Dorrien’s stand at Le Cateau on August 26 disabled the British Force for some days, it did much to save the Allied left wing. On August 28, the German IV Army was sharply arrested at Novion Porcien; and next day took place the combats of Proyart and Dun-sur-Meuse, and the battle of Guise. In these and many lesser actions, the spirit of the armies was prepared for the hour when the issue should be fairly joined.

The Fabian strategy was soon and progressively justified. Weaknesses inherent in the German plan began to appear. Every day of their unsuccessful chase aggravated the problem of supplying the armies, removed them from their heavy artillery, stretched and thinned their infantry lines, weakened their liaison, bred weariness and doubt (which were too often drowned in drink), while the French, on the contrary, were shortening their communications, and generally pulling themselves together. “It is the old phenomenon of the wearing down of forces in case of an offensive which we here encounter anew,” says Freytag-Loringhoven. Two or three corps had to be left behind to mask Antwerp and to besiege Maubeuge; the Grand Staff could not altogether resist the Russian scare. There was increasing dislocation: in particular, Kluck had got dangerously out of touch with Bülow. And there was something worse than “wearing down” and dislocation. “Perhaps our programme would not have collapsed,” the historian Meinecke imagines,81 “if we had carried through our original strategical idea with perfect strictness, keeping our main forces firmly together, and, for the time, abandoning East Prussia.” This cannot be admitted. So far from being pursued more strictly, the original German idea soon could not be pursued at all. Its boldest feature had become inapplicable to circumstances more and more subject to another will. On September 1, when the Somme had been passed, and while Joffre was ordering the extension of the retreat to the Seine and the Aube, Moltke was engaged in changing radically the direction of the marching wing of the invasion, Kluck’s I Army. Failing successively on the Sambre, the Somme, the Oise, and finally stultified by the superior courage that staked the capital itself upon the chance of a victorious recoil farther south, the greatest of all essays in envelopment ended in a recognised fiasco.

With the appearance on the southern horizon of the fortress of Verdun and the city of Paris, and the entry of the Allied armies between them as into a corridor, the whole problem, in fact, was transformed. The German Command suddenly found itself in face of a fatal dilemma. As Paris obstructed the way of Kluck, so Verdun challenged the Prussian Crown Prince. To enter the corridor without first reducing these two unknown quantities would be to risk serious trouble on both flanks; to stay to reduce them would involve delay, or dispersal of force, either of which would be disastrous. The course of argument by which the Grand Staff decided this deadly question has not been revealed. They chose the first alternative. Kluck was ordered to pass south-eastward of the one “entrenched camp,” the Imperial Crown Prince south-westward of the other, both, and the three armies between them, to overtake the Allies and force them to a frontal encounter, while a fresh effort was made to break through the eastern defences. A heavy price must be paid for such large re-establishments and changes of plan in face of an alert enemy. Kluck has been too much blamed for what followed. He may have been guilty of recklessness, over-reaching ambition, and specific disobedience. But here, as in the Battle of the Frontiers, it is the authors, not the executants, of the offensive operation who must be held chiefly responsible for consequences that are in the logic of the case.

Joffre’s hour had come. He had laboured to win three elements of an equal struggle lacking in the north: (a) a more favourable balance of numbers and armament—this was gained by the “wearing down” of the enemy, and the reinforcement of the Allied line, in course of the retreat, so that the battle of the Marne commenced with something more than an equality, and ended with a distinct Allied superiority in the area of decision; (b) a favourable terrain—this was reached on the classic ground between the capital and the middle Meuse, under cover of the eastern armies, and subject to the dilemma of Paris–Verdun; (c) a sound strategic initiative. For this, the 6th Army had been prepared, and the 5th kept at full strength. The failure of the enveloping movement and the change of the German plan provided the opportunity. To reduce the distended front of the invasion, at one time no less than 140 miles (Amiens to Dun-sur-Meuse), to one of 100 miles (Crécy-en-Brie to Revigny), Kluck had boldly crossed the face of the 6th Army, and on the evening of September 5 presented a moving flank of more than 40 miles long to Maunoury, French, and d’Espérey’s left. Joffre seems to have hesitated for a moment as to whether it were best to continue the retreat, as arranged, to the Seine, and then to have given way to Gallieni’s importunity. “We cannot count on better conditions for our offensive,” he told the Government.

The order of battle was issued on the evening of September 4. “Advantage must be taken of the adventurous situation of the I German Army (right wing),” it started: this was to be the factor of surprise. Positions would be taken on the 5th in order that the general movement might begin at dawn on the following day. The 6th Army and the British were to strike east on either side of the Marne, toward Château-Thierry and Montmirail respectively, while the 5th Army attacked due northward: thus, it was hoped, Kluck would be taken in flank and front, and crushed by superior force. The central armies (9th and 4th) would move north against Bülow, the Saxons, and the Duke of Würtemberg; and Sarrail would break westward from Verdun against the exposed flank of the Crown Prince. The function of Foch’s, the smallest of the French armies concerned, and of de Langle’s, the next smallest, must be regarded as primarily defensive, the chief offensive rôle being entrusted to d’Espérey’s, by far the strongest, and Maunoury’s, with the small British force linking them. Sarrail had not the means to exploit his advantage of position. The essence of the plan lay in the rectangular attack of the left.

The CRISIS of the BATTLE

Mid-day, Sept. 9.

The design was perfect: Kluck’s columns, stretched out from the Ourcq to near Esternay, should have been smashed in, the western part of the German communications overwhelmed, the other armies put to flight. These results were not obtained; the whole battle was, indeed, compromised, before it was well begun, by the unreadiness of the Allied left and the precipitancy of General Gallieni. When Lamaze’s reservists stumbled upon Schwerin’s outposts north of Meaux, at midday on September 5—eighteen hours before the offensive was timed to open—Maunoury had only three divisions in line, and on the following day he had only two more. Kluck had instantly taken alarm; his II Corps was actually on its way back to the Ourcq while the main body of the Allied armies was commencing their grand operation. The benefit of surprise was thus sacrificed; and Kluck was able to move one after another of his corps to meet Maunoury’s reinforcements as they arrived upon the field. Certain French partizans of the then Governor of Paris have attempted to shift the responsibility for this miscarriage to the shoulders of the British Commander-in-Chief. The Expeditionary Force deserves more scrupulous justice. It had retired and was re-forming behind the Forest of Crécy, at the request of General Joffre, when the order of September 4 arrived. The positions therein named to be reached on the following day (Changis–Coulommiers) were unattainable, being too far away, and solidly held by the enemy. The instructions for Marshal French were to attack eastward toward Montmirail on the 6th; neither to him nor to the French Staff was it known till the afternoon of that day that Kluck was withdrawing across the Marne. No need appeared of helping Maunoury until September 7. By that time the Field-Marshal had again changed his direction at Joffre’s request, facing north beside d’Espérey, instead of east beside Maunoury; and, from the moment when Kluck’s withdrawal was discovered, rapid progress was made.

The German Staff now seems to have completely lost control of its two chief Commanders. The fatal fault is plainly exhibited in Bülow’s “Bericht zur Marneschlacht”—significantly, withheld from publication for five years. Though weakened by a premature start, unreadiness, and imperfect co-ordination, the French attack on the Ourcq necessarily produced not merely a local shock, but a disturbance reverberating eastward by what has been called its “effect of suction.” To double this with the strain of Bülow’s continued offensive—disastrously successful in the surprise of Fère Champènoise—was the most reckless gambling. With the I Army pulling north-west, the II Army pulling south-east, and 60 miles between the points where they were seeking a decision, how could anything more than a pretence of liaison be kept up? But it was precisely before this interval that Joffre had aligned a full third of the strength of the French crescent—the 20 divisions of the French 5th and British armies. In the separation of the two masses of the German right, and the entry between them of this powerful body, lies the governing cause of the victory.

All the rest is a prodigy of endurance. The battle of the Ourcq was no sooner joined than it resolved itself into a race of reinforcements, and a stubborn, swaying combat over a few miles of open farmland, with little of manœuvre, save reciprocal attempts at envelopment by the north. The story of the battle of the Marshes of St. Gond is the epic of Foch’s obstinacy, of Humbert’s defence of the pivot on the Sézanne plateau, the loss of the swampy barrier and Mont Août, the agonising breakdown about Fère Champènoise on September 8, and the devices of the following day to close the breach. Between these points of strangulation, the real offensive arm of the Allies progressed with comparative ease. On the night of September 8, when d’Espérey’s 3rd Corps entered Montmirail, it was exactly midway between them. On the morning of the 9th, when the British 1st and 2nd Corps passed the Marne, Kluck and Bülow were more definitely divided. At noon, Smith-Dorrien and Haig were on the Lizy–Château-Thierry road; and in the evening d’Espérey’s 18th Corps held Château-Thierry. No last-moment success of the enemy on the Ourcq or in Champagne could have greatly affected the course of this development. The necessity of a retreat of the three Western armies was probably accepted by the German Grand Staff in the morning of September 9; but it may be that a considerable success by either or both of the Crown Princes on that day would have modified the decision as regards the rest of the front. At 11 a.m. Betz was evacuated; and during the afternoon great convoys were seen hurrying from the Ourcq to the Aisne. Bülow’s orders, inspired by fear of flank attack by d’Espérey’s 10th and 1st Corps, rather than by the 42nd Division, seem to have been given about 3 p.m. Fère Champènoise was abandoned in the evening, and Foch’s anxiously prepared manœuvre could not be carried out. The 6th and 9th Armies were too much exhausted to attempt a serious pursuit till next morning; and the German right reached the Aisne without inordinate losses.

Every part of the French line had contributed to this result, every other army had been cut or kept down to serve the major opportunity. And, if it stood relatively immobile, no less heroism and resource were shown on the eastern than on the western wing of the Allied crescent. Sarrail and de Langle were able to keep a rectangular disposition like that of Maunoury and the B.E.F., forcing the Crown Prince to fight on a double front; but they had not even a numerical equality of force with which to exploit it. The 4th Army, in holding foot by foot the Ornain-Saulx valley from Vitry to Sermaize, and the 3rd in its defence of the long salient of the Meuse, were also weighed upon by this peculiar anxiety: a comparatively small force might pierce their frail river guard, or the wall of the Lorraine armies might collapse beside them. They were helped to success by three errors of omission on the part of the German armies concerned: (1) Verdun was not directly attacked, the Crown Prince being confident that it would fall automatically while his cavalry were reaching Dijon; (2) the attempt to force the Meuse at Troyon was feeble and tardy; (3) the thinly-covered gap on Langle’s left was not discovered until the 21st Corps had been brought up. All along the line, the fighting was of a sustained violence. The 15th Corps arrived from Lorraine on September 8 just in time to save the junction of the 3rd and 4th Armies. It was, however, not till noon on the 11th that the Duke of Würtemberg abandoned Vitry; and only on the night of the 12th did the Prince Imperial order a retreat which definitely relieved Verdun, and reopened the Châlons road and railway.