The fortress of Przemysl 1915. Public domain image courtesy Wikimedia Commons.
- The Siege of Przemysl begins as Russian forces isolate the fortress town on the River San in present day Poland. The siege is the longest of the war, lasting until March 1915. It is a crushing defeat for Austria-Hungary, who suffer over 86,000 dead and up to 110,000 wounded.
- The French town of Péronne is captured by German forces
