jan 1, 1917 - 1917 - After the interception of the Zimmermann Telegram, which attempted to entice Mexico to join the Central Powers in exchange for a return of the Mexican Cession, The United States sent its military in the form of the American Expeditionary Force to aid the allies in defeating the Central Powers. This overt involvement in the European war was the first time American troops fought a land war in Europe.
Added to timeline:
Date:
jan 1, 1917
Now
~ 108 years ago