Marie Curie helps to equip ambulances with X-ray equipment so wounded soldiers at the front can receive immediate care.

The German code name for the attack in the Meuse region of France (toward the direction of Verdun) is Gericht, ‘place of execution.’ Verdun becomes the symbol of France’s...

British nurse Edith Cavell, a nursing instructor working with the Red Cross, is shot by Germans at 7 a.m. under accusations of being a spy and helping Allied soldiers escape Belgium. She was charged...

The former Czar Nicholas II, his wife and children, are shot by Bolsheviks at Ekaterinburg.

The Central Powers troops cross the Danube River and within days capture Belgrade. A massive Serbian retreat follows. Soldiers and their families made their way to the Albanian border through...

British and Indian forces move up the Tigris River to capture Kut-al-Amara in Mesopotamia from Turkish forces. Their ultimate goal is Baghdad, roughly 100 miles from present-day Baghdad in Iraq. ...

French and American forces of the 3rd, 28th, 32nd, and 42nd Divisions go ‘over the top’ on their offensive south of Soissons. Severe fighting along the Ourcq River establishes the reputation of the...

In London, women demonstrate for the right to work in war industries with banners proclaiming: “Women Demand the Right to Serve” and “The Situation is Serious – Women Must Help...

From flank to flank, 665,000 Allied soldiers are assembled for this offensive. The 304th Tank Brigade, commanded by Colonel George S. Patton, draws the fledgling American tank corps’ first blood. By...