Baltic: German Navy Parseval airship PL 19 shot down by Russian anti-aircraft fire during bombing raid on Libau.
Flanders – First Action of Givenchy: British 1st Division repulse an attack. French stand firm near Ypres.
Aisne: German advance on Craonne plateau.
Champagne: Germans attack at 4 points around Hill 200 near Perthes. Joffre agrees next day to postpone the French attack until drier weather.
Alsace: Fog impedes operations.
East Prussia: By now Russian Twelfth Army forming to invade East Prussia from south. The advances from northeast are at Pillkallen area and on Tilsit on January 29.
Baltic: Russian submarine torpedoes German cruiser Gazelle off Rügen, but towed to harbour. Russian submarine sinks German torpedo boat off Cap Moen, Denmark on January 29.
Rumania: Government refuses to join Greece supporting Serbia.
USA: Bell makes first transcontinental telephone call.
Belgium: Germans seize metal stocks
Germany: Government decree seizes all grain and flour stocks from February 1.