British Expeditionary Force (World War I) in the context of "First Battle of Ypres"

Francis George Fowler (1871–1918) was an English writer on English language, grammar and usage.

Born in Tunbridge Wells, Fowler was educated at Peterhouse, Cambridge. He lived on Guernsey in the Channel Islands. He and his older brother, Henry Watson Fowler, wrote The King's English together, an influential book published in 1906. Later they worked on what became Fowler's Modern English Usage, but before it was finished, Francis died of tuberculosis, picked up during his service with the British Expeditionary Force in World War I. He was 47 years old.

The First Battle of the Marne or known in France as the Miracle on the Marne (French: miracle de la Marne) was a battle of the First World War fought from 5 to 12 September 1914. The German army invaded France with a plan for winning the war in 40 days by occupying Paris and destroying the French and British armies. The Germans had initial successes in August. They were victorious in the Battles of Mons and the Frontiers and overran a large area of northern France and Belgium. In what is called the Great Retreat the Germans pursued the retreating French and British forces more than 250 km (160 mi) southwards. The French and British halted their retreat in the Marne River valley, while the Germans advanced to 40 km (25 miles) from Paris.

With the battlefield reverses of August, Field Marshal John French, commander of the British Expeditionary Force (BEF), lost faith in the French and began to plan for a British retreat to port cities on the English Channel for an evacuation to Britain. Joseph Joffre, the French commander, maintained good order in his retreating army and was able to reinforce it with troops from his eastern flank and by integrating military reserve units into the regular army. By early September, the Franco–British forces outnumbered the Germans, who were exhausted after a month-long campaign, had outrun their supply lines and were suffering shortages. On 3 September, the military governor of Paris, Joseph Gallieni, perceived that the German right flank was vulnerable and positioned his forces to attack.

The Battle of the Somme (French: Bataille de la Somme; German: Schlacht an der Somme), also known as the Somme offensive, was a battle of the First World War fought by the armies of the British Empire and the French Republic against the German Empire. It took place between 1 July and 18 November 1916 on both sides of the upper reaches of the river Somme in France. The battle was intended to hasten a victory for the Allies. More than three million men fought in the battle, of whom more than one million were either wounded or killed, making it one of the deadliest battles in human history.

The French and British had planned an offensive on the Somme during the Chantilly Conference in December 1915. The Allies agreed upon a strategy of combined offensives against the Central Powers in 1916 by the French, Russian, British and Italian armies, with the Somme offensive as the Franco-British contribution. The French army was to undertake the main part of the Somme offensive, supported on the northern flank by the Fourth Army of the British Expeditionary Force (BEF). When the Imperial German Army began the Battle of Verdun on the Meuse on 21 February 1916, French commanders diverted many of the divisions intended for the Somme and the "supporting" attack by the British became the principal effort. British forces comprised a mixture of wartime volunteers from the Territorial Force and Kitchener's Army with the remains of the pre-war army.

The Battle of Mons, or the First Battle of Mons to differentiate it from another battle later in the war, was the first big engagement of the British Expeditionary Force (BEF) in the First World War. It was a subsidiary action of the Battle of the Frontiers, in which the Allies clashed with the German Army on the French–German frontier. At Mons, the British Army attempted to hold the line of the Mons–Condé Canal against the advancing German 1st Army. Although the British fought well and inflicted disproportionate casualties on the numerically superior Germans, they were forced to retreat due to being outnumbered and the sudden retreat of the French Fifth Army (General Charles Lanrezac) which exposed the British right flank. Though initially planned as a simple tactical withdrawal and executed in good order, the British retreat from Mons lasted for two weeks and took the BEF to the outskirts of Paris, before it counter-attacked in concert with the French, at the First Battle of the Marne.

The Battle of the Frontiers (French: Bataille des Frontières; German: Grenzschlachten; Dutch: Slag der Grenzen) comprised battles fought along the eastern frontier of France and in southern Belgium, shortly after the outbreak of the First World War. The battles resolved the military strategies of the French Chief of Staff General Joseph Joffre with Plan XVII and an offensive adaptation of the German Aufmarsch II deployment plan by Helmuth von Moltke the Younger. The German concentration on the right (northern) flank, was to wheel through Belgium and attack the French in the rear.

The German advance was delayed by the movement of the French Fifth Army under General Charles Lanrezac towards the north-west to intercept them and the presence of the British Expeditionary Force (BEF) on the French left. The Franco-British troops were driven back by the Germans, who were able to invade into northern France. French and British rearguard actions delayed the Germans, allowing the French time to transfer forces on the eastern frontier to the west to defend Paris, culminating in the First Battle of the Marne.

The Great Retreat (French: Grande Retraite) also known as the retreat from Mons, took place in the First World War. The retreat was more than 200 km (120 mi), from Belgium to the River Marne in France in August and September 1914. The French Fifth Army and the British Expeditionary Force had been defeated by the armies of the German Empire at the Battle of Charleroi (21 August) and the Battle of Mons (23 August). A counter-offensive by the Fifth Army, with some assistance from the BEF, at the First Battle of Guise (Battle of St. Quentin, 29–30 August) failed to halt the German advance. The retreat of the Fifth Army and the BEF continued to the south side of the Marne River. From 5 to 12 September, the First Battle of the Marne ended the Allied retreat and forced the German armies to retire towards the Aisne River and to fight the First Battle of the Aisne (13–28 September). Reciprocal attempts to outflank the opposing armies to the north known as the Race to the Sea followed from 17 September to 17 October.

The Battle of Cambrai (Battle of Cambrai, 1917, First Battle of Cambrai and Schlacht von Cambrai) was a British attack in the First World War, followed by the biggest German counter-attack against the British Expeditionary Force (BEF) since 1914. The town of Cambrai, in the département of Nord, in France, was an important supply centre for the German Siegfriedstellung (known to the British as the Hindenburg Line) 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 tactics 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 Third Army, decided to combine both plans. The French and British armies had used tanks en masse earlier in 1917, although to considerably less effect.

After a big British success on the first day, mechanical unreliability, German artillery and infantry defences exposed the frailties of the Mark IV tank. On the second day, only about half of the tanks were operational and British progress was limited. In the History of the Great War, the British official historian Wilfrid Miles and modern scholars do not place exclusive credit for the first day on tanks but discuss the concurrent evolution of artillery, infantry and tank methods. Numerous developments since 1915 matured at Cambrai, such as predicted artillery fire, sound ranging, infantry infiltration tactics, infantry-tank co-ordination and close air support. The techniques of industrial warfare continued to develop and played a vital part during the Hundred Days Offensive in 1918, along with replacement of the Mark IV tank with improved types. The rapid reinforcement and defence of Bourlon Ridge by the Germans, as well as their counter-attack, were also notable achievements, which gave the Germans hope that an offensive strategy could end the war before American mobilisation became overwhelming.

Field Marshal Douglas Haig, 1st Earl Haig, KT, GCB, OM, GCVO, KCIE (/heɪɡ/; 19 June 1861 – 29 January 1928) was a senior officer of the British Army. During the First World War he commanded the British Expeditionary Force (BEF) on the Western Front from late 1915 until the end of the war.

Haig's military career included service in the War Office, where he was instrumental in the creation of the Territorial Force in 1908. In January 1917 he was promoted to the rank of field marshal, subsequently leading the BEF during the final Hundred Days Offensive. This campaign, in combination with the Kiel mutiny, the Wilhelmshaven mutiny, the proclamation of a republic on 9 November 1918 and revolution across Germany, led to the armistice of 11 November 1918. It is considered by some historians to be one of the greatest victories ever achieved by a British-led army.

General Sir Archibald James Murray, GCB, GCMG, CVO, DSO (23 April 1860 – 21 January 1945) was a British Army officer who served in the Second Boer War and the First World War. He was chief of staff to the British Expeditionary Force (BEF) in August 1914 but appears to have suffered a physical breakdown in the retreat from Mons, and was required to step down from that position in January 1915. After serving as Deputy Chief of the Imperial General Staff for much of 1915, he was briefly Chief of the Imperial General Staff from September to December 1915. He was subsequently Commander-in-Chief of the Egyptian Expeditionary Force from January 1916 to June 1917, in which role he laid the military foundation for the defeat and destruction of the Ottoman Empire in the Arabian Peninsula and the Levant.