Timeline
- April 19, 1915: Fire in the powder stores of the Van armoury.
- April 20, 1915: Armenians in the city of Van, the countryside, and small towns begin a local uprising.
- April 24, 1915: Ottoman governor asks permission to move the Muslim civilian population to the west.
- May 2, 1915: Ottoman Army moves close to Van, but withdraws because of the presence of the Russian Army.
- May 3, 1915: Russian Army enters Van.
- August 16, 1915: Ottoman Army besieges Van; Battle of Van.
- September 1915: Ottoman Army is forced out by Russians.
- August 1916: Ottoman Army moves to the west of the region (Mush and Bitlis), but is forced out within a month.
- February 1917: Russian units disintegrate. Armenian volunteer units keep formation.
- September 1917: The Armenian Congress of Eastern Armenia merges Armenian volunteer units into a single militia under its control.
- February 10, 1918: The Duma of the Transcaucasus convenes.
- February 24, 1918: The Duma of the Transcaucasus declares the region to be an independent, democratic, federative republic.
- March 3, 1918: The Treaty of Brest-Litovsk gives Kars, Ardahan, and Batum regions to the Ottoman Empire.
- March 4, 1918: The Administration for Western Armenia condemns the Treaty of Brest-Litovsk.
- March 9, 1918: The Administration for Western Armenia presents its position to the Ottoman Empire.
- May 22, 1918: Battle of Sardarapat; Armenian militia fight against the Ottoman Empire.
- May 28, 1918: The Armenian Congress of Eastern Armenia declares the formation of the Democratic Republic of Armenia and its independence from the Transcaucasian Democratic Federative Republic.
- August 4, 1918: General Lionel Charles Dunsterville leads a British expeditionary force into Baku and becomes the city's military governor.
- October 30, 1918: The Ottoman Empire signs the Armistice of Mudros, agreeing to leave the Transcaucasus.
- September 24 – December 2, 1920: The Turkish National Movement invades the DRA, seizing control of Wilsonian Armenia.
- December 4, 1920: The Red Army enters the capital of the DRA, bringing the DRA under Soviet control.
- October 23, 1921: The Treaty of Kars is signed, recognizing Turkish annexation of Wilsonian Armenia and granting Turkey the Province of Kars.
Read more about this topic: Administration For Western Armenia