German soldiers on the snow-covered Hartmannswillerkopf (Vieil Armand) hill, Vosges, January 1917. Image courtesy Imperial War Museum © IWM (Q 88135).
- French soldiers penetrate German lines south of Leintrey on the Western Front, destroying the garrison and taking prisoners
- German troops advance on the Eastern Front between Tirul swamp and the River Aa at Riga, capturing 900 Russians
- Russian forces in southern Bukovina capture enemy hill fortifications east of Jakobeny and take more than 1,000 prisoners
- French, British, Italian and Russian delegates meet in Petrograd to discuss military and financial issues
