Editing 1917 (section)

===September===
{{main|September 1917}}
* [[September 5]] &ndash; WW1: On the Eastern Front, German troops enter [[Riga]] after a successful offensive against the city's Russian defenders. 
* [[September 11]] &ndash; The [[Bellevue Conference (September 11, 1917)|Bellevue Conference]] is held.
* [[September 14]] (September 1 [[Old Style]]) &ndash; Russia is declared a [[Russian Republic|republic]] by the [[Russian Provisional Government|Provisional Government]].
* [[September 23]] &ndash; [[Leon Trotsky]] is elected Chairman of the [[Petrograd Soviet]].
* [[September 25]] &ndash; The [[Mossovet]] ([[Moscow]] Soviet of People's Deputies) votes to side with the [[Bolsheviks]].
* [[September 26]]–[[October 3]] &ndash; WWI: [[Battle of Polygon Wood]] (part of the [[Battle of Passchendaele]]) near [[Ypres]] in Belgium &ndash; British and Australian troops capture positions from the Germans.
* [[September 28]]–[[September 29|29]] &ndash; WWI: [[Battles of Ramadi (1917)#Second Battle of Ramadi|Second Battle of Ramadi]] &ndash; British troops take [[Ramadi]] from the Ottoman Empire.