Over four years, both sides of WWI would launch attacks against the enemy’s trench lines, attacks that resulted in horrific casualties.

American servicemen returned from the First World War only to find a new type of violent conflict waiting for them at home.

Mail service has historically been a cornerstone of American life and communication, and that was especially true for those serving overseas during World War I.

American Moina Michael is credited for giving rise to the use of the poppy as a symbol of remembrance.

Lieut. Raymond B. Penniman was just one of countless young men who fought in the Battle of the Somme. The following letters were donated to the Museum in 2013 by his relatives.

The scheduled Olympics in 1916 were canceled due to World War I. While the Olympics resumed in 1920, a seminal event featuring renowned athletes from across the world took place in 1919 in the of the...

Late this morning, two shots rang out from a street corner in the center of this city, mortally wounding the archduke Franz Ferdinand, heir to the throne of the Austro-Hungarian Empire, and Sophie of...

When World War I began in July 1914, Italy was a partner in the Triple Alliance with Germany and Austria-Hungary, but decided to remain neutral.

As American soldiers mobilized for war in the spring of 1918, a handful of army physicians began noticing a worrisome influenza moving among their soldiers.