- The first contingent of US troops arrives at Saint-Nazaire in France. Lieutenant General John Joseph “Black Jack” Pershing, Commander-in-Chief of the American Expeditionary Forces (AEF), greets the 14,000 infantrymen as they step ashore, declaring: “They are sturdy rookies – we shall make great soldiers of them”. More than two million American soldiers would serve in WWI, 50,000 of whom would die in battle. The First US Infantry Troops Land in France
- British troops on the Western Front advance along the Souchez river, occupying La Coulotte
- Russian forces capture Serdesht in Persia