
January 1915
| Date | Events |
|---|---|
| 1 | German submarine sinks HMS "Formidable" in English Channel |
| 10 | British defence of Muscat (Eastern Arabia) |
| 12 | British force seizes Mafia Island in German East Africa |
| 13 | British War Council instructs Admiralty to prepare for a naval expedition in the Dardanelles |
| 14 | South Africa forces capture Swakopmund in German South West Africa |
| 18 | German forces mount attack against British-held Jasin in East Africa: capture it on 19 January |
| 19 | First German airship raid on England |
| 24 | Naval battle at Dogger Bank in North Sea |
| 24 | British government offers Greece concessions in Asia Minor in return for assistance to Serbia: Greeks decline on 29 January |
| 25 | Lieut-General Sir William Robertson appointed Chief of the General Staff to British Expeditionary Force |
| 26 | Turkish troops begin to advance through Sinai desert to attack Suez Canal |
| 27 | Lieut-General Sir R. C. Maxwell appointed Quartermaster General to British Expeditionary Force |
| 28 | British government decides to make naval attack in the Dardanelles |
| 29 | German submarine bombards Walney Island battery at Barrow in Furness |
| 31 | Arab forces occupy Farasan Islands in the Red Sea |