- The Royal Australian Naval Brigade Minesweeping Section is established. The section is responsible for all minesweeping activities in Australian waters during WWI.
- King George V renounces his German heritage; by royal proclamation he changes the name of the British Royal Family from Saxe-Coburg-Gotha to Windsor
- British troops on the Western Front conduct successful raids in the Ypres sector
- French forces regain lost positions north-west of Verdun
- Russian troops on the Eastern Front hold their positions in Galicia against German counter attacks
- The people of Petrograd take to the streets to protest against escalating hardships. Fighting in the streets of Petrograd, Russia
Troops of the Provisional Government fire machine guns on demonstrators in the streets of Petrograd, 17 July 1917. Image in public domain.
