September Days
| September Days | |
|---|---|
| Part of the Armenian-Azerbaijani War | |
 Refugees leaving the town of Baku. | |
| Location | Baku, Azerbaijan Democratic Republic |
| Date | September 1918 |
| Target | Armenians in Baku |
| Deaths | 10,000–30,000 Armenians killed; rest of Armenian community deported |
| Victims | Armenians |
| Perpetrators | Army of Islam, Azerbaijani irregulars |
The September Days (Armenian: 1918 թ. Բաքվի հայերի կոտորած, romanized: Bakvi hayeri kotorats, lit. '1918 massacre of Baku Armenians') refers to a period during the Russian Civil War and the Battle of Baku in September 1918 when Armenian inhabitants of Baku, Azerbaijan, were massacred by Enver Pasha's Army of Islam and their local Azerbaijani allies when they captured the soon-to-be capital of the Azerbaijan Democratic Republic. It is estimated that around 10,000 to 30,000 ethnic Armenians were killed in the violence. It was the last major massacre of World War I.