World War I

World War I was a global conflict of the early 20th century from 1914-1918, between the Central Powers, Germany, Austria-Hungary, the Ottoman Empire and Bulgaria, and the Allied powers, primarily Great Britain, France, Russia, and later the United States. World War I was ignited in the Balkan city of Sarajevo in June 1914 with the assassination of Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, and war was declared in August. World War I was characterized by the horror of trench warfare on the Western Front and the rise of Bolshevism in the East, and millions died in the catastrophic conflict. The causes of World War I were many, including various territorial disputes, a major arms race, conflicting political ideologies, and more. World War I ended with the Treaty of Versailles; however, the agreement left many issues unresolved and heaped blame and the requirement for reparations on Germany, sowing the seeds of World War II.

Marines of the British Royal Naval Division go over the top in an assault against Ottoman positions on the strategic high ground of Achi Baba at the base of the Gallipoli Peninsula.

World War I

Senseless Slaughter at Gallipoli

By William E. Welsh

The crash of the heavy guns from a dozen British and French capital ships, one of which was the super-dreadnought the HMS Queen Elizabeth, reverberated against the shoreline of the Dardanelles on February 19, 1915. Read more

French soldiers launch a ferocious bayonets assault against German defenders inside Fort Douaumont in a successful counterattack against the strongpoint in October 1916.

World War I

Heroic Stand at Verdun

By Mark Carlson

The morning of June 23, 1916, dawned over the broad crenellated valley of the Meuse River in northeastern France. Read more

Three crews were lost during tests of the Horace L. Hunley, shown in a painting by Conrad Wise Chapman.

World War I

Evolution of the Submarine

By John Protasio

The concept of a ship that could submerge beneath the water and then resurface dates back as far as the late 1400s, when Italian Renaissance artist and inventor Leonardo da Vinci claimed to have found a method for a ship to remain submerged for a protracted period of time. Read more

A seemingly endless procession of trucks brings American soldiers and supplies to the front at Chateau-Thierry in May 1918. Painting by William James Aylward.

World War I

American Stand At Chateau-Thierry

By George T. Raach

For the hard-pressed German Empire, New Year’s Day 1918 brought a compendium of evils. The Allied naval blockade, increasingly effective, depressed industrial production and stoked a war weariness made manifest in strikes and bread riots. Read more

World War I

WWI’s Daring Cavalry Charge at Beersheba

By Alex Zakrzewski

In late 1917, the most successful cavalry charge of World War I took place not on the muddy killing fields of the Western Front, but at the foot of the Judean Hills in southern Palestine. Read more

World War I

Brusilov’s WWI Breakthrough on the Eastern Front

By Eric Niderost

The high command of the Imperial Russian Army, known as Stavka, met on April 14, 1916, at Mogilev in Belarus to discuss possible offensive action against the Germans and their Austro-Hungarian allies on the Eastern Front. Read more

World War I

Germany’s Bold Naval Raider

By Christopher Miskimon

World War I was only a few days old when the German light cruiser SMS Emden, patrolling off the Korean Peninsula, spotted its first target. Read more

In their first major battles of World War I, American Expeditionary Force troops helped blunt multiple offensives launched by the German Army in the spring of 1918.

World War I

WWI Timeline: Sowing the Seeds of the Conflict

by Arnold Blumberg

This WWI Timeline covers the first decade of the 20th century, in which the so-called “Great Powers” of Europe attempted to advance their economic and technological prowess to out-do—or at worst, at least keep pace—with their neighbors and rivals. Read more