Romanian troops cross the Trotus River, 1917. Image courtesy Imperial War Museum © IWM (Q 76641).
- French troops succeed at Artemps on the Western Front
- The retreating German army floods the Oise valley and La Fere
- New Allied detachments cross the Ailette river and progress north of Soissons
- Russian soldiers on the Eastern Front lose trenches west of Moinesci near River Trotus
