Editing 1915 (section)

=== October ===
{{main|October 1915}}
* [[October 12]] – WWI: British nurse [[Edith Cavell]] is executed by a [[German Empire|German]] firing squad, for helping [[Allies of World War I|Allied]] soldiers escape from Belgium.
* [[October 15]] – WWI: [[Serbian Campaign of World War I|Serbian Campaign]] – [[Austria-Hungary]] invades the [[Kingdom of Serbia]]. [[Kingdom of Bulgaria|Bulgaria]] enters the war, also invading Serbia. The [[Serbian First Army]] retreats towards [[Kingdom of Greece (Glücksburg)|Greece]].
* [[October 16]] – WWI: France declares war on [[Bulgaria]].
* [[October 19]]
** WWI: [[Russia]] and [[Italy]] declare war on [[Bulgaria]].
** [[Mexican Revolution]]: The U.S. recognizes the Mexican government of [[Venustiano Carranza]] ''[[de facto]]'' (not ''[[de jure]]'' until [[1917]]).
* [[October 21]] – The [[United Daughters of the Confederacy]] holds its first annual meeting outside the South, in [[San Francisco]]. Historian General [[Mildred Rutherford]] addresses the gathering on the "Historical Sins of Omission & Commission", of [[Yankee]] historians.
* [[October 23]] – WWI: The torpedoing of [[armored cruiser]] {{SMS|Prinz Adalbert|1901}} results in only 3 men being rescued from a crew of 675, the greatest single loss of life for the [[Imperial German Navy]] in the [[Baltic Sea]] during the war.
* [[October 25]] – [[Lyda Conley]], the first [[Native Americans in the United States|American Indian]] woman to appear before the [[Supreme Court of the United States]] as a lawyer, is admitted to practice there.<ref>"Washington, Oct. 25." ''[[The New York Times]]'', October 26, 1915.</ref>
* [[October 27]] – [[Billy Hughes|William Morris "Billy" Hughes]] becomes the 7th [[Prime Minister of Australia]].
* [[October 28]] – [[St. Johns School fire]]: Fire at St. John's School in [[Peabody, Massachusetts]], United States, claims the lives of 21 girls between the ages of 7 and 17.