World War I

"In Flanders Fields" is a war poem in the form of a rondeau, written during the First World War by Canadian physician Lieutenant-Colonel John McCrae.

Veterans Day is an official United States public holiday, observed annually on November 11, that honors military veterans, that is, persons who served in the United States Armed Forces.

Treaty of Batum was signed in Batum between the Ottoman Empire and 3 Trans-caucasus states: the First Republic of Armenia, the Azerbaijan Democratic Republic and the Democratic Republic of Georgia, on June 4, 1918.

The Hindu–German Conspiracy was a series of plans between 1914 and 1917 by Indian nationalist groups to attempt Pan-Indian rebellion against the British Raj during World War I, formulated between the Indian revolutionary underground and exiled or self-exiled nationalists who formed, in the United States, the Ghadar Party, and in Germany, the Indian independence committee, in the decade preceding the Great War.

The stab-in-the-back myth (German: Dolchstoßlegende, pronounced [ˈdɔlçʃtoːsleˌɡɛndə] ) was the notion, widely believed in right-wing circles in Germany after 1918, that the German Army did not lose World War I but was instead betrayed by the civilians on the home front, especially the republicans who overthrew the monarchy in the German Revolution of 1918–19.

The Treaty of Versailles (French: Traité de Versailles) was one of the peace treaties at the end of World War I.

The Armistice of Mudros (Turkish: Mondros Mütarekesi), concluded on 30 October 1918, ended the hostilities, at noon the next day, in the Middle Eastern theatre between the Ottoman Empire and the Allies of World War I.

The Treaty of Neuilly-sur-Seine required Bulgaria to cede various territories, after Bulgaria had been one of the Central Powers defeated in World War I.

Dazzle camouflage, also known as razzle dazzle (US) or dazzle painting, was a family of ship camouflage used extensively in World War I, and to a lesser extent in World War II and afterwards.

The July Crisis was a diplomatic crisis among the major powers of Europe in the summer of 1914 that led to World War I.

(For the French plan, see Plan XVII.) The Schlieffen Plan (German: Schlieffen-Plan, pronounced [ʃliːfən plaːn]) was the name given after World War I to the thinking behind the German invasion of France and Belgium on 4 August 1914.

The Treaty of Trianon was the peace agreement of 1920 to formally end World War I between most of the Allies of World War I and the Kingdom of Hungary, the latter being one of the successor states to Austria-Hungary.

Trench fever (also known as "five-day fever", "quintan fever" (febris quintana in Latin), and "urban trench fever") is a moderately serious disease transmitted by body lice.

Armistice Day is commemorated every year on November 11 to mark the armistice signed between the Allies of World War I and Germany at Compiègne, France, for the cessation of hostilities on the Western Front of World War I, which took effect at eleven o'clock in the morning—the "eleventh hour of the eleventh day of the eleventh month" of 1918.

The Romanian Front (Russian: Румынский фронт) was a major formation of the Imperial Russian Army during the First World War.

The Treaty of Brest-Litovsk was a peace treaty signed on March 3, 1918 between the Russian SFSR and the Central Powers, but prior to that on February 9, 1918, the Central Powers signed an exclusive protectorate treaty (German: Brotfrieden, "peace for bread") with the Ukrainian People's Republic as part of the negotiations that took place in Brest-Litovsk, Grodno Governorate (now Brest, Belarus) recognizing the sovereignty of the Ukrainian republic.

The United States declared war on the German Empire on April 6, 1917, during World War I.

British counter-intelligence against the Indian revolutionary movement during World War I began from its initial roots in the late-19th century and ultimately came to span in extent from Asia through Europe to the West Coast of the United States and Canada.

The powder keg of Europe, sometimes alternately known as the Balkan powder keg, refers to the Balkans in the early part of the 20th century preceding World War I.

The Annie Larsen affair was a gun-running plot in the United States during World War I.

Remembrance Day (sometimes known informally as Poppy Day) is a memorial day observed in Commonwealth of Nations member states since the end of the First World War to remember the members of their armed forces who have died in the line of duty.

The Ghadar Mutiny (Hindustani: ग़दर राज्य-क्रान्ति, غدر ریاست - کرانتی Ġadara Rājya-krānti), also known as the Ghadar Conspiracy, was a plan to initiate a pan-Indian mutiny in the British Indian Army in February 1915 to end the British Raj in India.

The Economic history of World War I covers the methods used by the major nations to pay the costs of the First World War (1914–1918), as well as related postwar issues such as war debts and reparations.

Trench foot is a medical condition caused by prolonged exposure of the feet to damp, unsanitary, and cold conditions.

Shell shock is term coined to describe the reaction of some soldiers in World War I to the trauma of battle.

The music of World War I is the music which was composed during the war or which is associated with it.