The United States campaigns in World War I began after American entry in the war in early April 1917. The American Expeditionary Force (AEF) served on...

The United States declared war on the German Empire on April 6, 1917, nearly three years after World War I started. A ceasefire and armistice were declared...

The United States entered into World War I in April 1917, more than two and a half years after the war began in Europe. Apart from an Anglophile element...

Britain, France, the Kingdom of Italy, Australia, and the United States. First World War naval action in the Adriatic consisted mainly of Austro-Hungarian bombardments...

years of World War I, entering on the side of the Allied powers from 27 August 1916 until Central Power occupation led to the Treaty of Bucharest in May 1918...

The World War I Victory Medal (known prior to establishment of the World War II Victory Medal in 1945 simply as the Victory Medal) was a United States service...

Mexican–American War, the American Civil War, the Spanish-American War, World War I, World War II and the Gulf War. It also includes US involvement in widespread...

The United States home front during World War II supported the war effort in many ways, including a wide range of volunteer efforts and submitting to government-managed...

in the United States Army during World War I. Many of these formations still exist today, though many by different designations. First United States Army...

of war in the United States during World War I and World War II. In all, 425,000 German prisoners lived in 700 camps throughout the United States during...

Eastern Theatre of World War I. The fighting also involved local Persian units, who fought against the Entente and Ottoman forces in Iran. The conflict...

the United States during World War II covers the nation's role as one of the major Allies in their victory over the Axis Powers. The United States is generally...

rallies, demonstrations, campaigns, and vigils, relating to the Israel–Hamas war have occurred nationwide across the United States since the conflict's start...

World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies...

The Italian campaign of World War II, also called the Liberation of Italy following the German occupation in September 1943, consisted of Allied and Axis...

The I Corps is a corps of the United States Army headquartered in Joint Base Lewis-McChord, Washington. It is a major formation of United States Army Pacific...

and the Mexican federal troops until 1918. The United States joined World War I as an "Associated Power" in 1917 on the side of Britain, France, Russia,...

military formation of the United States Army that saw service in World War I and World War II, in the 1991 Gulf War, and in the coalition occupation of...

United States involvement in the Vietnam War began shortly after the end of World War II in Asia, first in an extremely limited capacity and escalating...

Südwestfront) was one of the main theatres of war of World War I. It involved a series of military engagements in Northern Italy between the Central Powers...

The financing of electoral campaigns in the United States happens at the federal, state, and local levels by contributions from individuals, corporations...

Asian and Pacific theatre of World War I consisted of various military engagements that took place on the Asian continent and on Pacific islands. They...

of a national government in order to create a state of war between two or more sovereign states. In the context of World War I, the official international...

War, the War of 1812, the Mexican–American War, the Civil War, the Spanish–American War, World War I, World War II, the Korean War, the Vietnam War,...

During World War I (1914–1918), belligerents from both the Allied Powers and Central Powers violated international criminal law, committing numerous war crimes...

Serbian Army at the battle of Cer is considered the first Allied victory in World War I, and the Austro-Hungarian Army's defeat by Serbia has been called one...

in World War I France in World War I Germany in World War I Italy in World War I Romania in World War I United Kingdom in World War I United States in...

2023 Hamas-led attack on Israel and outbreak of the Israel–Hamas war, the United States began to send warships and military aircraft into the Eastern Mediterranean...

The United States Navy grew rapidly during its involvement in World War II from 1941–45, and played a central role in the Pacific War against Imperial...

Germany in February 1917. The Act itself was drafted by then-Captain (later Brigadier General) Hugh S. Johnson after the United States entered World War I by...