French Army in World War I
During World War I, France was one of the Triple Entente powers allied against the Central Powers. Although fighting occurred worldwide, the bulk of the French Army's operations occurred in Belgium, Luxembourg, France and Alsace-Lorraine along what came to be known as the Western Front, which consisted mainly of trench warfare. Specific operational, tactical, and strategic decisions by the high command on both sides of the conflict led to shifts in organizational capacity, as the French Army tried to respond to day-to-day fighting and long-term strategic and operational agendas. In particular, many problems caused the French high command to re-evaluate standard procedures, revise its command structures, re-equip the army, and to develop different tactical approaches
In common with most other continental European powers, the French Army was organized on the basis of universal conscription. Each year, the "class" of men turning twenty in the upcoming year would be inducted into the French Army and spend three years in active service. After leaving active service they would progress through various stages of reserves, each of which involved a lower degree of commitment.
The peacetime army consisted of 173 infantry regiments, 79 cavalry regiments, and 87 artillery regiments. All were substantially under strength and would be filled out on mobilization by the first three classes of the Reserve (that is, men between 24 and 26). Each regiment would also leave behind a cadre of training personnel to conduct refresher courses for the older reservists, who were organized into 201 Reserve Regiments and 145 Territorial Regiments. Above the regimental level, France was divided into 22 Military Regions, each of which would become an Army Corps on mobilization.
At the apex of the French Army was the General Staff, since 1911 under the leadership of General Joseph Joffre. The General Staff was responsible for drawing up the plan for mobilization, known as Plan XVII. Using the railroad network, the Army would be shifted from their peacetime garrisons throughout France to the eastern border with Germany.
The order for mobilization was given on 1 August 1914, the same day that Germany declared war on Russia. Immediately called to their regiments were the classes of 1896 to 1910, comprising almost three million reservists of 24 to 38 years old.[4]
Upon mobilization, Joffre became Commander-in-Chief of the French Army. Most of his forces were concentrated in the northeast of France, both to attack Alsace-Lorraine and to meet the expected German offensive through the Low Countries.
Over the course of the First World War another five field armies would be raised. The war scare led to another 2.9 million men being mobilized in the summer of 1914 and the costly battles on the Western Front forced France to conscript men up to the age of 45. This was done by the mobilization in 1914 of the Territorial Army and its reserves, comprising men who had completed their peacetime service with the active and reserve armies (ages 20–34).[5]
In June 1915, the Allied countries met in the first inter-Allied conference.[6] Britain, France, Belgium, Italy, Serbia and Russia agreed to coordinate their attacks but the attempts were frustrated by German offensives on the Eastern Front and spoiling offensives at Ypres and in the hills west of Verdun.[6]
By 1918, towards the end of the war, the composition and structure of the French army had changed. Forty percent of all French soldiers on the Western Front were operating artillery and 850,000 French troops were infantry in 1918, compared to 1.5 million in 1915. Causes for the drop in infantry include increased machine gun, armored car and tank usage, as well as the increasing significance of the French air force, the Service Aéronautique. At the end of the war on November 11, 1918, the French had called up 8,817,000 men, including 900,000 colonial troops. The French army suffered around 6 million casualties, including 1.4 million dead and 4.2 million wounded, roughly 71% of those who fought. Out of the one million French infantrymen who died in the war, more than half died between the outbreak of war and November 1915.[7]
A French regiment on the march near the battlefield of the Oisne, 1918.
French general inspecting troops before they take up positions near the trenches occupied by American troops in the Vosges, France, 1918.
