22 May 1917
- Austro-German troops launch a fierce attack on Russian trenches on the Eastern Front near Kovel
- Italian troops on the Southern Front advance at Carso
- Kurdish forces attack the Russian rear near Khanikan in Mesopotamia
- Hungarian Prime Minister Istvan Tisza resigns at the request of the Austrian emperor, Karl I. Crisis in Austria-Hungary
This entry was posted on May 22nd, 2017.