The British Expeditionary Force (BEF) was the six-divisions the British Army sent to the Western Front during the First World War. Planning for a British Expeditionary Force began with the 1906–1912 Haldane reforms of the British Army carried out by the Secretary of State for War Richard Haldane following the Second Boer War (1899–1902).
Aleksei Alekseyevich Brusilov was a Russian and later Soviet general most noted for the development of new offensive tactics used in the 1916 Brusilov Offensive, which was his greatest achievement. The innovative and relatively successful tactics used were later copied by the Germans. Born into the aristocracy to a father who was also a general, Brusilov trained as a cavalry officer, but by 1914 he realized that cavalry was obsolete in the new style of warfare because of its vulnerability to machine gun and artillery. Historians portray him as the only First World War Russian general capable of winning major battles. However, his heavy casualties seriously weakened the Russian army, which was unable to replace its losses.
Daniel Isom Sultan was an American general. Sultan was born in Oxford, Mississippi, and graduated from the United States Military Academy in 1907. He entered the United States Army Corps of Engineers and rose through the ranks, teaching engineering at West Point from 1912 to 1916, before travelling to the Philippines. He oversaw construction of fortifications on various islands, and eventually was in charge of all US Army fortification work in the Philippines. He then served on the War Department General Staff and the general staff of the American Expeditionary Forces until 1922. Sultan led the Nicaragua Canal Survey and commanded American troops in the country from 1929 to 1931, when he returned to the United States and wrote a report on the canal.
Paul Prosper Henrys was a French general.
Viktor Julius Ignaz Ferdinand Graf Dankl von Krásnik was a highly decorated Austro-Hungarian officer who reached the pinnacle of his service during World War I with promotion to the rare rank of Colonel General (Generaloberst). His successful career met an abrupt end in 1916 due to both his performance on the Italian front and health issues. After the war, he would be a vocal apologist for both his country's war record and the dethroned Habsburg monarchy.
Marie Émile Fayolle was a French general during World War I and a diplomat, elevated to the dignity of Marshal of France.
The Third Army was originally established in Skopje and later defended the northeastern provinces of the Ottoman Empire. Its initial headquarters was at Salonica, where it formed the core of the military forces that supported the Young Turk Revolution of 1908. Many of its officers who participated in the Revolution, including Enver Pasha and Mustafa Kemal Atatürk, rose to fame and power.
The Sixth Army was a field army of the French Army during World War I and World War II.
Karl Decker was a general in the Wehrmacht of Nazi Germany during World War II who committed suicide in the Ruhr Pocket on 21 April 1945. He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves and Swords.
Vladimir Viktorovich Sakharov was a Russian general of the cavalry who served in the Russian Imperial Army. In an army career lasting from 1869 to 1917, he served in the Russo-Turkish War of 1877-1878, the Russo-Japanese War, and World War I.
General of the Armies John Joseph Pershing, nicknamed "Black Jack", was a senior United States Army officer. He served most famously as the commander of the American Expeditionary Forces (AEF) on the Western Front during World War I, from 1917 to 1918. In addition to leading the AEF to victory in World War I, Pershing notably served as a mentor to many in the generation of generals who led the United States Army during World War II, including George C. Marshall, Dwight D. Eisenhower, Omar Bradley, Lesley J. McNair, George S. Patton and Douglas MacArthur.
General Sir Roy Bucher was a British soldier who became the second Commander-in-Chief of the Indian Army and the final non-Indian to hold the top post of the Indian Army after Partition.
Alexander Frantsevich Ragoza, in Ukrainian Rogoza, was a Minister of Defense of the Ukrainian State. He was also a general of the infantry in the Imperial Russian Army who saw service during World War I.
Malin Craig was a general in the United States Army who served as the 14th Chief of Staff of the United States Army from 1935 to 1939. He served in World War I and was recalled to active duty during World War II and, although he is mostly forgotten today, he played a very large role in preparing the U.S. Army for World War II.
Sergei Mikhailovich Sheydeman was an army commander of the Imperial Russian Army in World War I. After the October Revolution, he sided with the Bolsheviks.
Vasily Yegorovich Flug was an Imperial Russian Army General of the Infantry. A career military officer, he served in the Boxer Rebellion, Russo-Japanese War, and World War I, before joining the White movement during the Russian Civil War. Like many other officers, he went into exile after the end of the Russian Civil War, initially moving to Yugoslavia. After World War II, Flug went to the United States, where he died.
Louis Napoléon Eugène Joseph Conneau was a French general who graduated from Saint Cyr military academy as part of the class of 1874–1876.
The Romanian Debacle consisted in a series of battles between November and December 1916 which led to the Central Powers conquest of Bucharest, the capital of Romania. Russian forces joined the Romanians at the start of December.
The 1917 Romanian Campaign consisted in three battles between late July and early September 1917, fought between Germany and Austria-Hungary on one side versus Romania and Russia on the other. Romania emerged from this campaign with a slight net territorial gain and won its most important battle during the First World War.
Henry John Milnes MacAndrew was a British Army officer who served in the British Indian Empire and then, during World War I, in France and the Middle East.
France 