41 1917 in France

The Hindenburg Line was a German defensive position built during the winter of 1916–1917 on the Western Front during the First World War. The line ran from Arras to Laffaux, near Soissons on the Aisne. In 1916, the Battle of Verdun and the Battle of the Somme left the German western armies exhausted and on the Eastern Front, the Brusilov Offensive had inflicted huge losses on the Austro-Hungarian armies and forced the Germans to take over more of the front. The declaration of war by Romania had placed additional strain on the German army and war economy.

Operation Alberich was the code name of a German military operation in France during the First World War. Two salients had been formed during the Battle of the Somme in 1916 between Arras and Saint-Quentin and from Saint-Quentin to Noyon. Alberich was planned as a strategic withdrawal to new positions on the shorter and more easily defended Hindenburg Line. General Erich Ludendorff was reluctant to order the withdrawal and hesitated until the last moment.

Operations on the Ancre took place from 11 January – 13 March 1917, between the British Fifth Army and the German 1st Army, on the Somme front during the First World War. After the Battle of the Ancre, British attacks on the Somme front stopped for the winter. Until early January 1917, both sides were reduced to surviving the rain, snow, fog, mud fields, waterlogged trenches and shell-holes. Preparations for the British offensive at Arras, due in the spring of 1917, continued.

The Battle of Arras was a British offensive on the Western Front during World War I. From 9 April to 16 May 1917, British troops attacked German defences near the French city of Arras on the Western Front. The British achieved the longest advance since trench warfare had begun, surpassing the record set by the French Sixth Army on 1 July 1916. The British advance slowed in the next few days and the German defence recovered. The battle became a costly stalemate for both sides and by the end of the battle, the British Third and First Army had suffered about 160,000 casualties and the German 6th Army about 125,000.

The Battle of Cambrai was a British attack followed by the biggest German counter-attack against the British Expeditionary Force (BEF) since 1914, in the First World War. The town of Cambrai, in the département of Nord, was an important supply point for the German Siegfriedstellung and capture of the town and the nearby Bourlon Ridge would threaten the rear of the German line to the north. Major General Henry Tudor, Commander, Royal Artillery (CRA) of the 9th (Scottish) Division, advocated the use of new artillery-infantry techniques on his sector of the front. During preparations, J. F. C. Fuller, a staff officer with the Tank Corps, looked for places to use tanks for raids. General Julian Byng, commander of the British Third Army, decided to combine both plans. The French and British armies had used tanks in mass earlier in 1917, although to considerably less effect.

The Battle of Hill 70 took place in the First World War between the Canadian Corps and four divisions of the German 6th Army. The battle took place along the Western Front on the outskirts of Lens in the Nord-Pas-de-Calais region of France between 15 and 25 August 1917.

The Battle of the Hills also known as the Battle of the Hills of Champagne and the Third Battle of Champagne, was a battle of the First World War that was fought from April–May 1917. The French Fourth Army offensive against the German 4th Army was to support the Groupe d'armées du Nord along the Chemin des Dames, in the Second Battle of the Aisne. General Anthoine, commander of the Fourth Army planned a supporting attack but this was rejected by Nivelle and Anthoine planned a frontal attack by two corps on an 11 km (6.8 mi) front, to break through the German defences on the first day and commence exploitation the following day. The battle took place east of Reims, between Prunay and Aubérive, in the province of Champagne, along the Moronvilliers Hills.

Bloody April was the British air support operation during the Battle of Arras in April 1917, during which particularly heavy casualties were suffered by the Royal Flying Corps at the hands of the German Luftstreitkräfte.

The Cambon letter was an unpublished letter to Zionist diplomat Nahum Sokolow issued by the French government in 1917 during the First World War announcing support for the Zionist project in Palestine, then an Ottoman region with a small minority Jewish population. It read: You were good enough to present the project to which you are devoting your efforts, which has for its object the development of Jewish colonization in Palestine.You consider that, circumstances permitting, and the independence of the Holy Places being safeguarded on the other hand, it would be a deed of justice and of reparation to assist, by the protection of the Allied Powers, in the renaissance of the Jewish nationality in that Land from which the people of Israel were exiled so many centuries ago. The French Government, which entered this present war to defend a people wrongfully attacked, and which continues the struggle to assure the victory of right over might, can but feel sympathy for your cause, the triumph of which is bound up with that of the Allies. I am happy to give you herewith such assurance.

The Battle of La Malmaison from 23 to 27 October, was the final French action of the 1917 campaign in the First World War, which had begun with the Nivelle Offensive. The French captured the village and fort of La Malmaison and took control of the Chemin des Dames ridge. The German 7th Army had discovered French preparations for the attack and also identified the date and time. Boehn chose to defend the front positions, rather than treat them as an advanced zone and to conduct the main defence north of the Oise–Aisne Canal. The German artillery was outnumbered three-to-one and on the front of the 14th Division, 32 German batteries were confronted by 125 French, which silenced most of the German guns before the attack. Gas from French bombardments on low-lying land near the Oise–Aisne Canal in the Ailette valley, became so dense that it was impossible to carry ammunition and supplies forward or to remove the wounded.

The First attack on Bullecourt was a military operation on the Western Front during the First World War. The 1st Anzac Corps of the British Fifth Army attacked in support of the Third Army, engaged in the Battle of Arras. The Report of the Battles Nomenclature Committee (1921) called operations subsidiary to the main Battle of Arras the Flanking Operation to the Arras Offensive.

The German attack on Lagnicourt on 15 April 1917 was a military operation on the Western Front during the First World War. Four German divisions conducted a spoiling attack on the positions of the 1st Anzac Corps of the British Fifth Army. The attack was intended to delay the advance of the Fifth Army towards the Hindenburg Line, cause as many casualties and destroy as much equipment, particularly artillery, as possible.

The Battle of Langemarck was the second Anglo-French general attack of the Third Battle of Ypres, during the First World War. The battle took place near Ypres in Belgian Flanders, on the Western Front against the German 4th Army. The French First Army had a big success on the northern flank from Bixschoote to Drie Grachten and the British gained a substantial amount of ground northwards from Langemark to the boundary with the French.

The Battle of Messines was an attack by the British Second Army, on the Western Front near the village of Messines in West Flanders, Belgium, during the First World War. The Nivelle Offensive in April and May had failed to achieve its more grandiose aims, had led to the demoralisation of French troops and confounded the Anglo-French strategy for 1917. The attack forced the Germans to move reserves to Flanders from the Arras and Aisne fronts, relieving pressure on the French.

At the start of the Battle of Messines (7–14 June 1917) during the First World War, a series of underground explosive charges were detonated by the British Army beneath German lines near the village of Mesen, in Belgian West Flanders. The mines, secretly planted by British tunnelling units, created 19 large craters and are estimated to have killed approximately 10,000 German soldiers. Their joint explosion ranks among the largest non-nuclear explosions of all time.

The Battle of Monastir (1917) was a failed French attack against German-Bulgarian fortifications North and West of Monastir, between March 12 and May 26, 1917 during the Salonika Campaign in World War I.

The Nivelle Offensive, was a Franco-British operation on the Western Front in the First World War. The French part of the offensive was intended to be strategically decisive by breaking through the German defences on the Aisne front within 48 hours, with casualties expected to be around 10,000 men. A preliminary attack was to be made by the French Third Army at St. Quentin and the British First, Third and Fifth armies at Arras, to capture high ground and divert German reserves from the French fronts on the Aisne and in Champagne. The main offensive was to be delivered by the French on the Chemin des Dames ridge, with a subsidiary attack by the Fourth Army. The final stage of the offensive was to follow the meeting of the British and French armies, having broken through the German lines, then the pursuit of the defeated German armies towards the German frontier.

The Capture of Oppy Wood was an engagement on the Western Front of the First World War on 28 June 1917. The Arras Offensive of 1917 ended with the Germans in possession of a fortified wood to the west of Oppy, Pas-de-Calais, which overlooked British positions. The wood was 1 acre (0.4 ha) in area and contained many German observation posts, machine-guns and trench mortars. New German defensive tactics adopted after the Battle of the Somme of defence in depth and rapid counter-attack, had been enforced on the German 6th Army after the disaster of 9 April. A British attack was defeated everywhere on 3 May except at Fresnoy, which was captured by the 1st Canadian Division. The attack on Oppy Wood by the 92nd Brigade of the 31st Division during the Third Battle of the Scarpe (3–4 May), was repulsed with many British casualties. The area was defended by the 1st Guard Reserve Division and the 15th Reserve Division, which had not needed to call on specialist Eingreif (counter-attack) divisions.

The First Battle of Passchendaele took place on 12 October 1917 during the First World War, in the Ypres Salient on the Western Front. The attack was part of the Third Battle of Ypres and was fought west of Passchendaele village. The British had planned to capture the ridges south and east of the city of Ypres as part of a strategy decided by the Allies at conferences in November 1916 and May 1917. Passchendaele lay on the last ridge east of Ypres, 5 mi (8.0 km) from the railway junction at Roulers, which was an important part of the supply system of the German 4th Army.

The Battle of Pilckem Ridge was the opening attack of the Third Battle of Ypres in the First World War. The British Fifth Army, supported by the Second Army on the southern flank and the French 1reArmée on the northern flank, attacked the German 4th Army, which defended the Western Front from Lille northwards to the Ypres Salient in Belgium and on to the North Sea coast. On 31 July, the Anglo-French armies captured Pilckem Ridge and areas on either side, the French attack being a great success. After several weeks of changeable weather, heavy rain fell during the afternoon of 31 July.

The Actions of 30 September – 4 October 1917 were German methodical counter-attacks during the Third Battle of Ypres in Flanders, during the First World War. Hasty counter-attacks by the German 4th Army during the Battle of the Menin Road Ridge on 20 September and the Battle of Polygon Wood on 26 September, had been costly failures. On 29 September, a review was held at Roulers by Erich Ludendorff the Generalquartiermeister with the commanders of Heeresgruppe Kronprinz Rupprecht von Bayern and the 4th Army staffs.

The Saint-Michel-de-Maurienne derailment of 12 December 1917 was a railway accident involving a troop train carrying at least 1,000 French soldiers on their way home for leave from the Italian Front in World War I. A derailment as the train descended the Maurienne valley rail line caused a catastrophic crash and subsequent fire in which more than 675 died. France's deadliest rail accident, it occurred on the Culoz–Modane railway line.

The Second Battle of the Aisne was the main part of the Nivelle Offensive, a Franco-British attempt to inflict a decisive defeat on the German armies in France. The Entente strategy was to conduct offensives from north to south, beginning with an attack by the British Expeditionary Force (BEF) then the main attack by two French army groups on the Aisne. General Robert Nivelle planned the offensive in December 1916, after he replaced Joseph Joffre as Commander-in-Chief of the French Army.

The Battle of La Malmaison from 23 to 27 October, was the final French action of the 1917 campaign in the First World War, which had begun with the Nivelle Offensive. The French captured the village and fort of La Malmaison and took control of the Chemin des Dames ridge. The German 7th Army had discovered French preparations for the attack and also identified the date and time. Boehn chose to defend the front positions, rather than treat them as an advanced zone and to conduct the main defence north of the Oise–Aisne Canal. The German artillery was outnumbered three-to-one and on the front of the 14th Division, 32 German batteries were confronted by 125 French, which silenced most of the German guns before the attack. Gas from French bombardments on low-lying land near the Oise–Aisne Canal in the Ailette valley, became so dense that it was impossible to carry ammunition and supplies forward or to remove the wounded.

The Agreement of St.-Jean-de-Maurienne was an agreement between France, Italy and Great Britain, which emanated from a conference in a railway car at Saint-Jean-de-Maurienne on April 19, 1917, and signed by the allies between August 18 – September 26, 1917.

The Battle of Vimy Ridge was part of the Battle of Arras, in the Nord-Pas-de-Calais region of France, during the First World War. The main combatants were the four divisions of the Canadian Corps in the First Army, against three divisions of the German 6th Army. The battle took place from 9 to 12 April 1917 at the beginning of the Battle of Arras, the first attack of the Nivelle Offensive, which was intended to attract German reserves from the French, before their attempt at a decisive offensive on the Aisne and the Chemin des Dames ridge further south.

In 1917, during World War I, the armies on the Western Front continued to change their fighting methods, due to the consequences of increased firepower, more automatic weapons, decentralisation of authority and the integration of specialised branches, equipment and techniques into the traditional structures of infantry, artillery and cavalry. Tanks, railways, aircraft, lorries, chemicals, concrete and steel, photography, wireless and advances in medical science increased in importance in all of the armies, as did the influence of the material constraints of geography, climate, demography and economics. The armies encountered growing manpower shortages, caused by the need to replace the losses of 1916 and by the competing demands for labour by civilian industry and agriculture. Dwindling manpower was particularly marked in the French and German armies, which made considerable changes in their methods during the year, simultaneously to pursue military-strategic objectives and limit casualties.

The Capture of Wytschaete was a tactical incident in the Battle of Messines on the Western Front during the First World War. On 7 June, the ridge was attacked by the British Second Army; the 36th (Ulster) Division and the 16th (Irish) Division of IX Corps captured the fortified village of Wytschaete on the plateau of Messines Ridge, which had been held by the German 4th Army since the First Battle of Ypres.

The Action of 25 September 1917 was a German methodical counter-attack (Gegenangriff) which took place during the Third Battle of Ypres (31 July – 10 November) on the Western Front during the First World War. On the front of the British X Corps at the south-east side of the Gheluvelt Plateau, two regiments of the German 50th Reserve Division attacked on both sides of the Reutelbeek stream, on a 1,800 yd (1,600 m) front. The Gegenangriff was supported by German aircraft and 44 field and 20 heavy batteries of artillery, four times the usual amount of artillery for a German division.