The Battle of Verdun (French: Bataille de Verdun [bataj də vɛʁdœ̃]; German: Schlacht um Verdun [ʃlaxt ʔʊm ˈvɛɐ̯dœ̃]) was fought from 21 February to 18 December 1916 on the Western Front in France. The battle was the longest of the First World War and took place on the hills north of Verdun. The German 5th Army attacked the defences of the Fortified Region of Verdun (RFV, Région Fortifiée de Verdun) and those of the French Second Army on the right (east) bank of the Meuse. Using the experience of the Second Battle of Champagne in 1915, the Germans planned to capture the Meuse Heights, an excellent defensive position, with good observation for artillery-fire on Verdun. The Germans hoped that the French would commit their strategic reserve to recapture the position and suffer catastrophic losses at little cost to the German infantry.
Poor weather delayed the beginning of the attack until 21 February but the Germans captured Fort Douaumont four days later. The advance then slowed for several days, despite inflicting many French casualties. By 6 March, 20+1⁄2 French divisions were in the RFV and a more extensive defence in depth had been organised. Philippe Pétain ordered there to be no retreat and that German attacks were to be counter-attacked, despite this exposing French infantry to the German artillery. By 29 March, French guns on the west bank had begun a constant bombardment of Germans on the east bank, causing many infantry casualties. The German offensive was extended to the west bank of the Meuse to gain observation and eliminate the French artillery firing over the river but the attacks failed to reach their objectives.
In early May, the Germans changed tactics again and made local attacks and counter-attacks; the French recaptured part of Fort Douaumont but the Germans ejected them and took many prisoners. The Germans tried alternating their attacks on either side of the Meuse and in June captured Fort Vaux. The Germans advanced towards the last geographical objectives of the original plan, at Fleury-devant-Douaumont and Fort Souville, driving a salient into the French defences. Fleury was captured and the Germans came within 2.5 mi (4 km) of the Verdun citadel but in July the offensive was limited to provide troops, artillery and ammunition for the Battle of the Somme, leading to a similar transfer of the French Tenth Army to the Somme front. From 23 June to 17 August, Fleury changed hands sixteen times and a German attack on Fort Souville failed. The offensive was reduced further but to keep French troops away from the Somme, ruses were used to disguise the change.
In September and December, French counter-offensives recaptured much ground on the east bank and recovered Fort Douaumont and Fort Vaux. The battle lasted for 302 days, one of the longest and costliest in human history. In 2000, Hannes Heer and Klaus Naumann calculated that the French suffered 377,231 casualties and the Germans 337,000, a total of 714,231 and an average of 70,000 a month. In 2014, William Philpott wrote of 714,000 casualties suffered by both sides during the Battle of Verdun in 1916 and that about 1,250,000 casualties were suffered in the vicinity of Verdun in the war. In France, the battle came to symbolise the determination of the French Army and the destructiveness of the war.
The Battle of Verdun (French: Bataille de Verdun [bataj də vɛʁdœ̃]; German: Schlacht um Verdun [ʃlaxt ʔʊm ˈvɛɐ̯dœ̃]) was fought from 21 February to 18 December 1916 on the Western Front in France. The battle was the longest of the First World War and took place on the hills north of Verdun. The German 5th Army attacked the defences of the Fortified Region of Verdun (RFV, Région Fortifiée de Verdun) and those of the French Second Army on the right (east) bank of the Meuse. Using the experience of the Second Battle of Champagne in 1915, the Germans planned to capture the Meuse Heights, an excellent defensive position, with good observation for artillery-fire on Verdun. The Germans hoped that the French would commit their strategic reserve to recapture the position and suffer catastrophic losses at little cost to the German infantry.
Poor weather delayed the beginning of the attack until 21 February but the Germans captured Fort Douaumont four days later. The advance then slowed for several days, despite inflicting many French casualties. By 6 March, 20+1⁄2 French divisions were in the RFV and a more extensive defence in depth had been organised. Philippe Pétain ordered there to be no retreat and that German attacks were to be counter-attacked, despite this exposing French infantry to the German artillery. By 29 March, French guns on the west bank had begun a constant bombardment of Germans on the east bank, causing many infantry casualties. The German offensive was extended to the west bank of the Meuse to gain observation and eliminate the French artillery firing over the river but the attacks failed to reach their objectives.
In early May, the Germans changed tactics again and made local attacks and counter-attacks; the French recaptured part of Fort Douaumont but the Germans ejected them and took many prisoners. The Germans tried alternating their attacks on either side of the Meuse and in June captured Fort Vaux. The Germans advanced towards the last geographical objectives of the original plan, at Fleury-devant-Douaumont and Fort Souville, driving a salient into the French defences. Fleury was captured and the Germans came within 2.5 mi (4 km) of the Verdun citadel but in July the offensive was limited to provide troops, artillery and ammunition for the Battle of the Somme, leading to a similar transfer of the French Tenth Army to the Somme front. From 23 June to 17 August, Fleury changed hands sixteen times and a German attack on Fort Souville failed. The offensive was reduced further but to keep French troops away from the Somme, ruses were used to disguise the change.
In September and December, French counter-offensives recaptured much ground on the east bank and recovered Fort Douaumont and Fort Vaux. The battle lasted for 302 days, one of the longest and costliest in human history. In 2000, Hannes Heer and Klaus Naumann calculated that the French suffered 377,231 casualties and the Germans 337,000, a total of 714,231 and an average of 70,000 a month. In 2014, William Philpott wrote of 714,000 casualties suffered by both sides during the Battle of Verdun in 1916 and that about 1,250,000 casualties were suffered in the vicinity of Verdun in the war. In France, the battle came to symbolise the determination of the French Army and the destructiveness of the war.
Background
Strategic developments
After the German invasion of France had been halted at the First Battle of the Marne in September 1914, the war of movement ended at the Battle of the Yser and the First Battle of Ypres. The Germans built field fortifications to hold the ground captured in 1914 and the French began siege warfare to break through the German defences and recover the lost territory. In late 1914 and in 1915, offensives on the Western Front had failed to gain much ground and been extremely costly in casualties. According to his memoirs written after the war, the Chief of the German General Staff, Erich von Falkenhayn, believed that although victory might no longer be achieved by a decisive battle, the French army could still be defeated if it suffered a sufficient number of casualties. Falkenhayn offered five corps from the strategic reserve for an offensive at Verdun at the beginning of February 1916 but only for an attack on the east bank of the Meuse. Falkenhayn considered it unlikely the French would be complacent about Verdun; he thought that they might send all their reserves there and begin a counter-offensive elsewhere or fight to hold Verdun while the British launched a relief offensive. After the war, Kaiser Wilhelm II and Gerhard Tappen, the Operations Officer at Oberste Heeresleitung (OHL, General Headquarters), wrote that Falkenhayn believed the last possibility was most likely.
By seizing or threatening to capture Verdun, the Germans anticipated that the French would send all their reserves, which would then have to attack secure German defensive positions supported by a powerful artillery reserve. In the Gorlice–Tarnów Offensive (1 May to 19 September 1915), the German and Austro-Hungarian Armies attacked Russian defences frontally, after pulverising them with large amounts of heavy artillery. During the Second Battle of Champagne (Herbstschlacht [autumn battle]) 25 September to 6 November 1915, the French suffered "extraordinary casualties" from the German heavy artillery, which Falkenhayn considered offered a way out of the dilemma of material inferiority and the growing strength of the Allies. In the north, a British relief offensive would wear down British reserves, to no decisive effect but create the conditions for a German counter-offensive near Arras.
Hints about Falkenhayn's thinking were picked up by Dutch military intelligence and passed on to the British in December. The German strategy was to create a favourable operational situation without a mass attack, which had been costly and ineffective when tried by the Franco-British, Falkenhayn intended to rely on the power of heavy artillery to inflict mass casualties. A limited offensive at Verdun would lead to the destruction of the French strategic reserve in fruitless counter-attacks and the defeat of British reserves during a hopeless relief offensive, leading to the French accepting a separate peace. If the French refused to negotiate, the second phase of the strategy would follow, in which the German armies would attack terminally weakened Franco-British armies, mop up the remains of the French armies and expel the British from Europe. To fulfil this strategy, Falkenhayn needed to hold back enough of the strategic reserve to defeat the Anglo-French relief offensives and then conduct a counter-offensive, which limited the number of divisions which could be sent to the 5th Army at Verdun for Unternehmen Gericht (Operation Judgement).
The Fortified Region of Verdun (RFV) lay in a salient formed during the German invasion of 1914. General Joseph Joffre, the Commander-in-Chief of the French Army, had concluded from the swift capture of the Belgian fortresses at the Battle of Liège and at the Siege of Namur in 1914 that fortifications had been made obsolete by German super-heavy siege artillery. In a directive of the General Staff of 5 August 1915, the RFV was to be stripped of 54 artillery batteries and 128,000 rounds of ammunition. Plans to demolish forts Douaumont and Vaux to deny them to the Germans were made and 11,000 lb (5,000 kg) of explosives had been placed in Douaumont by the time of the German offensive on 21 February. The 18 large forts and other batteries around Verdun were left with fewer than 300 guns and a small reserve of ammunition, while their garrisons had been reduced to small maintenance crews. The railway line from the south into Verdun had been cut during the Battle of Flirey in 1914, with the loss of Saint-Mihiel; the line west from Verdun to Paris was cut at Aubréville in mid-July 1915 by the German 3rd Army, which had attacked southwards through the Argonne Forest since the new year.
Région Fortifiée de Verdun
For centuries, Verdun, on the Meuse river, had played an important role in the defence of the French hinterland. Attila the Hun failed to seize the town in the fifth century and when the empire of Charlemagne was divided under the Treaty of Verdun (843), the town became part of the Holy Roman Empire; the Peace of Westphalia of 1648 awarded Verdun to France. At the heart of the city was a citadel built by Vauban in the 17th century. A double ring of 28 forts and smaller works (ouvrages) had been built around Verdun on commanding ground, at least 490 ft (150 m) above the river valley, 1.6–5.0 mi (2.5–8 km) from the citadel. A programme had been devised by Séré de Rivières in the 1870s to build two lines of fortresses from Belfort to Épinal and from Verdun to Toul as defensive screens and to enclose towns intended to be the bases for counter-attacks.
Many of the Verdun forts had been modernised and made more resistant to artillery, with a reconstruction programme begun at Douaumont in the 1880s. A sand cushion and thick, steel-reinforced concrete tops up to 8 ft 2 in (2.5 m) thick, buried under 3 ft 3 in – 13 ft 1 in (1–4 m) of earth, were added. The forts and ouvrages were sited to overlook each other for mutual support and the outer ring had a circumference of 28 mi (45 km). The outer forts had 79 guns in shellproof turrets and more than 200 light guns and machine-guns to protect the ditches around the forts. Six forts had 155 mm guns in retractable turrets and fourteen had retractable twin 75 mm turrets.
In 1903, Douaumont was equipped with a new concrete bunker (Casemate de Bourges), containing two 75 mm field guns to cover the south-western approach and the defensive works along the ridge to Ouvrage de Froideterre. More guns were added from 1903 to 1913 in four retractable steel turrets. The guns could rotate for all-round defence and two smaller versions, at the north-eastern and north-western corners of the fort, housed twin Hotchkiss machine-guns. On the east side of the fort, an armoured turret with a 155 mm short-barrelled gun faced north and north-east and another housed twin 75 mm guns at the north end, to cover the intervals between the neighbouring forts.
The fort at Douaumont formed part of a complex of the village, fort, six ouvrages, five shelters, six concrete batteries, an underground infantry shelter, two ammunition depots and several concrete infantry trenches. The Verdun forts had a network of concrete infantry shelters, armoured observation posts, batteries, concrete trenches, command posts and underground shelters between the forts. The artillery comprised c. 1,000 guns, with 250 in reserve; the forts and ouvrages were linked by telephone and telegraph, a narrow-gauge railway system and a road network; on mobilisation, the RFV had a garrison of 66,000 men and rations for six months.
Prelude
German preparations
Verdun had been isolated on three sides since 1914 and the mainline Paris–St Menehould–Les Islettes–Clermont-en-Argonne–Aubréville–Verdun railway in the Forest of Argonne was closed in mid-July 1915, by the right flank divisions of the 5th Army (GeneralmajorCrown Prince Wilhelm) when it reached the La Morte Fille–Hill 285 ridge, after continuous local attacks, rendering the railway unusable. Only a light railway remained to the French to carry bulk supplies; German-controlled mainline railways lay only 15 mi (24 km) to the north of the front line. A corps was moved to the 5th Army to provide labour for the preparation of the offensive. Areas were emptied of French civilians and buildings requisitioned. Thousands of kilometres of telephone cable were laid, a huge amount of ammunition and rations was dumped under cover and hundreds of guns were emplaced and camouflaged. Ten new rail lines with twenty stations were built and vast underground shelters (Stollen) 15–46 ft (4.5–14 m) deep were dug, each to accommodate up to 1,200 infantry.
The III Corps, VII Reserve Corps and XVIII Corps were transferred to the 5th Army, each corps being reinforced by 2,400 experienced troops and 2,000 trained recruits. V Corps was placed behind the front line, ready to advance if necessary when the assault divisions were moving up. XV Corps, with two divisions, was in 5th Army reserve, ready to advance and mop up as soon as the French defence collapsed. Special arrangements were made to maintain a high rate of artillery-fire during the offensive; 33+1⁄2 munitions trains per day were to deliver ammunition sufficient for 2,000,000 rounds to be fired in the first six days and another 2,000,000 shells in the next twelve. Five repair shops were built close to the front to reduce delays for maintenance and factories in Germany were made ready, rapidly to refurbish artillery needing more extensive repairs. A redeployment plan for the artillery was devised, to move field guns and mobile heavy artillery forward, under the covering fire of mortars and the super-heavy artillery. A total of 1,201 guns were massed on the Verdun front, two thirds of which were heavy- and super-heavy artillery, which was obtained by stripping modern German artillery from the rest of the Western Front and substituting for it older types and captured Russian and Belgian guns. The German artillery could fire into the Verdun salient from three directions yet remain dispersed around the edges.
German plan
The 5th Army divided the attack front into areas, A occupied by the VII Reserve Corps, B by the XVIII Corps, C by the III Corps and D on the Woëvre plain by the XV Corps. The preliminary artillery bombardment was to begin in the morning of 12 February. At 5:00 p.m., the infantry in areas A to C would advance in open order, supported by grenade and flame-thrower detachments. Wherever possible, the French advanced trenches were to be occupied and the second position reconnoitred for the artillery to bombard on the second day. Great emphasis was placed on limiting German infantry casualties by sending them to follow up destructive bombardments by the artillery, which was to carry the burden of the offensive in a series of large "attacks with limited objectives", to maintain a relentless pressure on the French. The initial objectives were the Meuse Heights, on a line from Froide Terre to Fort Souville and Fort Tavannes, which would provide a secure defensive position from which to repel French counter-attacks. "Relentless pressure" was a term added by the 5th Army staff and created ambiguity about the purpose of the offensive. Falkenhayn wanted land to be captured from which artillery could dominate the battlefield and the 5th Army wanted a quick capture of Verdun. The confusion caused by the ambiguity was left to the corps headquarters to sort out.