Japanese cruiser Takechiho. Image in public domain.
- The Japanese light cruiser Takachiho is struck by a single torpedo launched from the Imperial German Navy torpedo boat S-90 off the coast of Tsingtao. The cruiser sinks with the loss of 271 officers and men. This signifies the largest single loss suffered by Japanese forces during the entire war. Three men survive the attack.
- British warships begin to bombard Ostend
- The Belgian town of Roulers is taken by German forces
