Battle of Mulhouse
The Battle of Mulhouse (German: Mülhausen), also called the Battle of Alsace (French: Bataille d'Alsace), which began on 7 August 1914, was the opening attack of World War I by the French army against Germany. The battle was part of a French attempt to recover the province of Alsace, which France had ceded to the new German Empire following defeat in the Franco-Prussian War of 1870–1871. The French occupied Mulhouse on 8 August and were then forced out by German counter-attacks on 10 August. The French retired to Belfort, where General Louis Bonneau, the VII Corps commander was sacked along with the commander of the 8th Cavalry Division. Events further north led to the German XIV and XV corps being moved away from Belfort and a second French offensive by the French VII Corps, reinforced and renamed the French Army of Alsace (General Paul Pau), began on 14 August.
The Army of Alsace advanced cautiously, during the Battle of Lorraine, the principal French offensive by the First and Second armies, into the border province of Lorraine (German: Lothringen). The French reached the area west of Mulhouse by 16 August and fought their way into the city by 19 August. The German survivors were pursued eastwards over the Rhine and the French took 3,000 prisoners. Joffre ordered the offensive to continue but by 23 August, preparations were halted as news of the French defeats in Lorraine and the Ardennes arrived. On 26 August, the French withdrew from Mulhouse to a more defensible line near Altkirch, to provide reinforcements for the French armies closer to Paris. The Army of Alsace was disbanded, the VII Corps was transferred to the Somme area in Picardy and the 8th Cavalry Division was attached to the First Army, to which two more divisions were sent later. The German 7th Army took part in the counter-offensive in Lorraine with the German 6th Army and in early September was transferred to the Aisne.
Belgian military planning assumed a German invasion that other powers would eject an invader. This did not lead to France and Britain being seen as Belgian allies and Belgium intended only to protect its independence. The Anglo-French Entente (1904), had led the Belgians to perceive that the British had come to see Belgium as a British protectorate. A Belgian General Staff was formed in 1910 but the Chef d'État-Major Général de l'Armée, Lieutenant-Général Harry Jungbluth was retired on 30 June 1912 and not replaced until May 1914, by Lieutenant-General Chevalier de Selliers de Moranville. The new Chief of Staff began planning for the concentration of the army and met with railway officials on 29 July. Belgian troops were to be massed at the centre of the country, in front of the National redoubt of Belgium, ready to face any border, while the Fortified Position of Liège and Fortified Position of Namur were left to secure the frontiers. On mobilization, the King became Commander-in-Chief and chose where the army was to concentrate. Amid the disruption of the new rearmament plan, the disorganised and poorly trained Belgian soldiers would benefit from a central position to delay contact with an invader. The army would also need fortifications for defence but these were on the frontier. A school of thought wanted a return to a frontier deployment, in line with French theories of the offensive. Belgian plans became a compromise, in which the field army concentrated behind the Gete river, with two divisions forward at Liège and Namur.
German strategy had given priority to offensive operations against France and a defensive posture against Russia since 1891. German planning was determined by numerical inferiority, the speed of mobilisation and concentration and the effect of the vast increase of the power of modern weapons. Frontal attacks were expected to be costly and protracted, leading to limited success, particularly after the French and Russians modernised their fortifications on the frontiers with Germany. Alfred von Schlieffen Chief of the Imperial German General Staff (Oberste Heeresleitung, OHL) from 1891–1906, devised a plan to evade the French frontier fortifications with an offensive on the northern flank, which would have a local numerical superiority and obtain rapidly a decisive victory. By 1898–1899, such a manoeuvre was intended to rapidly pass through Belgium, between Antwerp and Namur and threaten Paris from the north.
Helmuth von Moltke the Younger succeeded Schlieffen in 1906 and was less certain that the French would conform to German assumptions. German strategy would need to become more opportunistic and Moltke modified German plans, to make them less rigid, making the offensives of 1914 the opening moves of what was expected to be a long war with no certainty of victory. Moltke adapted the deployment and concentration plan, to accommodate an attack in the centre or an enveloping attack from both flanks, by adding divisions to the left flank opposite the French frontier, from the c. 1,700,000 men expected to be mobilised in the Westheer (western army). The main German force would still advance through Belgium and attack southwards into France, the French armies would be enveloped on the left and pressed back over the Meuse, Aisne, Somme, Oise, Marne and Seine, unable to withdraw into central France. The French would either be annihilated or the manoeuvre from the north would create conditions for victory in the centre or in Lorraine.
Under Plan XVII, the French peacetime army was to form five field armies of c. 2,000,000 men, with "Groups of Reserve Divisions" attached to each army and a Group of Reserve Divisions on each of the extreme flanks. The armies were to concentrate opposite the German frontier around Épinal, Nancy and Verdun–Mezières, with an army in reserve around Ste. Ménéhould and Commercy. Since 1871, railway building had given the French General staff sixteen lines to the German frontier against thirteen available to the German army and the French could wait until German intentions were clear. The French deployment was intended to be ready for a German offensive in Lorraine or through Belgium. It was anticipated that the Germans would use reserve troops but also expected that a large German army would be mobilised on the border with Russia, leaving the western army with sufficient troops only to advance through Belgium south of the Meuse and the Sambre rivers. French intelligence had obtained a map exercise of the German general staff of 1905, in which German troops had gone no further north than Namur and assumed that plans to besiege Belgian forts were a defensive measure against the Belgian army.
A German attack from south-eastern Belgium towards Mézières and a possible offensive from Lorraine towards Verdun, Nancy and St. Dié was anticipated; the plan was an evolution from Plan XVI and made more provision for the possibility of a German offensive through Belgium. The First, Second and Third armies were to concentrate between Épinal and Verdun opposite Alsace and Lorraine, the Fifth Army was to assemble from Montmédy to Sedan and Mézières and the Fourth Army was to be held back west of Verdun, ready to move east to attack the southern flank of a German invasion through Belgium or southwards against the northern flank of an attack through Lorraine. No formal provision was made for combined operations with the British Expeditionary Force (BEF) but joint arrangements had been made and in 1911 during the Second Moroccan Crisis, the French had been told that six divisions could be expected to operate around Maubeuge.
Declarations of war
At midnight on 31 July – 1 August, the German government sent an ultimatum to Russia and announced a state of Kriegsgefahr during the day; the Turkish government ordered mobilisation and the London Stock Exchange closed. On 1 August the British government ordered the mobilisation of the navy, the German government ordered general mobilisation and declared war on Russia. Hostilities commenced on the Polish frontier, the French government ordered general mobilisation and next day the German government sent an ultimatum to Belgium, demanding passage through Belgian territory, as German troops crossed the frontier of Luxembourg. Military operations began on the French frontier, Libau was bombarded by a German light cruiser SMS Augsburg and the British government guaranteed naval protection for French coasts. On 3 August, the Belgian Government refused German demands and the British Government guaranteed military support to Belgium, should Germany invade. Germany declared war on France, the British government ordered general mobilisation and Italy declared neutrality. On 4 August the British government sent an ultimatum to Germany and declared war on Germany at midnight on 4–5 August, Central European Time. Belgium severed diplomatic relations with Germany and Germany declared war on Belgium. German troops crossed the Belgian frontier and attacked Liège.
In 1908 Moltke began to alter the plans for operations on the left wing of the German armies to face France and allocated the XIV Corps for the protection of Upper Alsace and several Landwehr brigades for the security of the Upper Rhine. Subsequent plans added forces to the region and by 1909 the 7th Army had three corps and a reserve corps, with two corps from Wissembourg to Saverne and Strasbourg, one corps on the left of the Rhine from Colmar to Mulhouse and the reserve corps on the right bank of the Rhine. The 6th Army was to assemble between Metz and Sarrebourg in Lorraine, which massed eight corps on the left wing, which with fortress garrisons and Landwehr troops, changed the ratio of forces between the left and right wings from 7:1 to 3:1. Moltke added forces to the left wing after concluding that a French offensive into Alsace and Lorraine and particularly from Belfort had become certain. The 7th Army was to defeat an offensive in Alsace and cooperate with the 6th Army to defeat an offensive in Lorraine. After 1910, the 7th Army was to attack with the 6th Army, towards the Moselle below Frouard and the Meurthe; provision was also made for the movement of troops to the right wing of the German armies, by reserving trains and wagons in the region.
The deployment plan for the western armies (Westheer), allocated to the 7th Army (Generaloberst Josias von Heeringen) the XIV and XV corps, the XIV Reserve Corps and the 60th Landwehr Brigade, to deploy from Strasbourg to Mulhouse and Freiburg-im-Breisgau and the command of fortresses at Strasbourg and Neuf-Brisach. The 1st and 2nd Bavarian brigades, 55th Landwehr Brigade, Landwehr Regiment 110 and a battery of heavy field howitzers were also added to the army, under the provisional command of the XIV Corps commander. In 1914, the XIV Corps on the Swiss border, guarded the frontier with the 58th Brigade and XV Corps guarded the border from Donon to the Rheinkopf, with several infantry regiments and Jäger battalions, some artillery and cavalry. The mobilisation and deployment was completed from 8–13 August but the German troops were concentrated further north than anticipated, to be ready to meet a French offensive from Belfort, with concentric attacks from the north and east.
The First Army mobilised with the VII, VIII, XIII, XXI, XIV corps and the 6th Cavalry Division. The VII Corps, with the 14th and 41st divisions, a brigade of the 57th Reserve Division from Belfort and the 8th Cavalry Division, was detached from the First Army on 7 August, for independent operations in southern Alsace. An attack into Alsace would begin the redemption of the lost provinces and demonstrate to Russia that the French army was fighting the common enemy. Bonneau reported a large concentration of German troops in the area and recommended delay but Joffre overruled him and ordered the attack to commence. Joffre issued General Order No. 1 on 8 August, in which the operation by VII Corps was to pin down the German forces opposite, to attract reserves away from the main offensive further north.
A few border skirmishes took place after the declaration of war and German reconnaissance patrols found that the French had a chain of frontier posts, supported by larger fortified positions further back; after 5 August more patrols were sent out as French activity increased. French troops advanced from Gérardmer to the Schlucht Pass, where the Germans retreated and blew up the tunnel. Joffre had directed the First and Second armies to engage as many German divisions as possible to assist French forces operating further north. The French VII Corps with the 14th and 41st divisions, under the command of General Bonneau, advanced from Belfort to Mulhouse and Colmar 35 kilometres (22 mi) to the north-east. The French advance was hampered by the breakdown of the supply service and many delays but seized the border town of Altkirch 15 kilometres (9.3 mi) south of Mulhouse with a bayonet charge.
On 8 August, Bonneau cautiously continued the advance and occupied Mulhouse, shortly after its German defenders had left. the First Army commander General Auguste Dubail preferred to dig in and wait for mobilization to finish but Joffre ordered the advance to continue. In the early morning of 9 August, parts of the XIV and XV Corps of the German 7th Army arrived from Strasbourg and counter-attacked at Cernay. The German infantry emerged from the Hardt forest and advanced into the east side of the city, French command broke down, the defenders fought isolated actions, Mulhouse was recaptured on 10 August and Bonneau withdrew towards Belfort. Further north, the French XXI Corps made costly attacks on mountain passes and were forced back from Badonviller and Lagarde, where the 6th army took 2,500 French prisoners and eight guns; civilians were accused of attacking German troops and subjected to reprisals.
General Paul Pau was put in command of a new Army of Alsace and Bonneau was dismissed (Limogé) by Joffre. The new army was reinforced with the 44th Division, the 55th Reserve Division, the 8th Cavalry Division and the 1st Group of Reserve Divisions (58th, 63rd and 66th Reserve divisions), to re-invade Alsace on 14 August as part of the larger offensive by the First and Second armies into Lorraine. Rupprecht of Bavaria, planned to move two corps of the 7th Army towards Sarrebourg and Strasbourg; Heeringen objected because the French had not been decisively defeated but most of the 7th Army was moved north. The Army of Alsace began the new offensive against four Landwehr brigades, which fought a delaying action as the French advanced from Belfort with two divisions on the right passing through Dannemarie at the head of the valley of the Ill river. On the left flank, two divisions advanced with Chasseur battalions, which had moved into the Fecht valley on 12 August. On the evening of 14 August, Thann was captured and the most advanced troops had passed beyond the suburbs of Cernay and Dannemarie on the western outskirts of the city, by 16 August. On 18 August, the VII Corps attacked Mulhouse and captured Altkirch on the south-eastern flank, as the northern flank advanced towards Colmar and Neuf-Brisach.
The German defenders were forced back from high ground west of Mulhouse on both banks of the Doller and into the Mulhouse suburbs, where a house-to-house battle took place. The streets and houses of Dornach were captured systematically and by the evening of 19 August, the French again controlled the city. (The commander of the French 88th Infantry Division, General Louis Victor Plessier was mortally wounded in the course of the battle at Zillisheim.) After being overrun, the Germans withdrew hastily through the Hardt forest to avoid being cut off and crossed the Rhine pursued by the French, retreating to Ensisheim, 20 kilometres (12 mi) to the north. The French captured 24 guns, 3,000 prisoners and considerable amounts of equipment. With the capture of the Rhine bridges and valleys leading into the plain, the French had gained control of Upper Alsace. The French consolidated the captured ground and prepared to continue the offensive but the German 7th Army was left free to threaten the right flank of the French First Army, which moved troops to the right flank. On 23 August, preparations were suspended as news arrived of the French defeats in Lorraine and Belgium and next day, the VII Corps was ordered to move to the Somme. On 26 August, the French withdrew from Mulhouse to a more defensible line near Altkirch, to provide reinforcements for the French armies closer to Paris. The Army of Alsace was disbanded and the 8th Cavalry Division was attached to the First Army, two more divisions being sent later.
Troops in the first French invasion of the war had experienced the extent of German fire power and some of the flaws in the French army, which had an excess of elderly commanders, a shortage of regimental officers and deficient supplies of maps and intelligence. Despite tactical instructions stressing combined-arms operations and the importance of fire power, cavalry and infantry were poorly trained and attacked swiftly, with little tactical finesse. The German XIV and XV corps had been diverted from their concentration areas and by 13 August, had been exhausted by battle and disorganised. The citizens of Alsace who unwisely celebrated the appearance of the French army, were left to face German reprisals. The Army of Alsace was dissolved on 26 August and many of its units distributed among the remaining French armies.
- Having entered Mulhouse on 7 August 1914, General Joseph Joffre issued a proclamation: French Proclamation on Invasion of Alsace at Mulhouse 7 August 1914 CHILDREN of ALSACE! After forty-four years of sorrowful waiting, French soldiers once more tread the soil of your noble country. They are the pioneers in the great work of revenge. For them what emotions it calls forth, and what pride! To complete the work they have made the sacrifice of their lives. The French nation unanimously urges them on, and in the folds of their flag are inscribed the magic words, "Right and Liberty". Long live Alsace. Long live France. General-in-Chief of the French Armies, JOFFRE.
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