thumb|Romanian troops entering Budapest thumb|115px|Friedrich Ebert becomes president in Weimar, Germany August 1 – Béla Kun's Hungarian Soviet Republic collapses. August 3 – The Romanian army enters Timișoara. August 4 – The Romanian army occupies Budapest. August 8 – The Anglo-Afghan Treaty of 1919, signed in Rawalpindi, ends the Third Anglo-Afghan War, with the United Kingdom recognising the right of the Emirate of Afghanistan to manage its own foreign affairs and Afghanistan recognising the Durand Line as the border with British India. August 11 – In Germany, the Weimar Constitution is proclaimed to be in effect (ratified). August 14–September 12 – Russian Civil War: Southern Front counteroffensive – The Red Army commanded by Vladimir Yegoryev attacks the White Volunteer Army of General Anton Denikin but is defeated. August 16–26 – First Silesian Uprising: Poles in Upper Silesia rise against the Germans. August 18 – Russian Civil War: North Russia intervention – The Bolshevik fleet at Kronstadt, protecting Petrograd on the Baltic Sea, is substantially damaged by British Royal Navy Coastal Motor Boats (torpedo boats) and military aircraft in a combined operation. August 21 – Friedrich Ebert becomes the first President of Germany (Reichspräsident) under the Weimar Constitution. August 27 – South African Prime Minister Louis Botha dies in office of 'Spanish flu'. August 29 – Russian Civil War: The Red Army captures Pskov from White forces. August 31 Russian Civil War, Southern Front: the city of Kyiv is captured by the White Army. The Communist Party of America is established.
thumb|Romanian troops entering Budapest thumb|115px|Friedrich Ebert becomes president in Weimar, Germany August 1 – Béla Kun's Hungarian Soviet Republic collapses. August 3 – The Romanian army enters Timișoara. August 4 – The Romanian army occupies Budapest. August 8 – The Anglo-Afghan Treaty of 1919, signed in Rawalpindi, ends the Third Anglo-Afghan War, with the United Kingdom recognising the right of the Emirate of Afghanistan to manage its own foreign affairs and Afghanistan recognising the Durand Line as the border with British India. August 11 – In Germany, the Weimar Constitution is proclaimed to be in effect (ratified). August 14–September 12 – Russian Civil War: Southern Front counteroffensive – The Red Army commanded by Vladimir Yegoryev attacks the White Volunteer Army of General Anton Denikin but is defeated. August 16–26 – First Silesian Uprising: Poles in Upper Silesia rise against the Germans. August 18 – Russian Civil War: North Russia intervention – The Bolshevik fleet at Kronstadt, protecting Petrograd on the Baltic Sea, is substantially damaged by British Royal Navy Coastal Motor Boats (torpedo boats) and military aircraft in a combined operation. August 21 – Friedrich Ebert becomes the first President of Germany (Reichspräsident) under the Weimar Constitution. August 27 – South African Prime Minister Louis Botha dies in office of 'Spanish flu'. August 29 – Russian Civil War: The Red Army captures Pskov from White forces. August 31 Russian Civil War, Southern Front: the city of Kyiv is captured by the White Army. The Communist Party of America is established.