Wikipedia:Selected anniversaries/August 22
- 1485 – Lancastrian forces under Henry Tudor, Earl of Richmond defeated Yorkist forces under Richard III of England at the Battle of Bosworth Field, decisively ending the Wars of the Roses.
- 1791 – A slave rebellion erupted in the French colony of Saint-Domingue, starting the Haitian Revolution.
- 1864 – The Red Cross movement led by Henry Dunant (pictured) officially began when twelve European nations signed the First Geneva Convention, establishing the International Committee of the Red Cross.
- 1910 – Korea was annexed by Japan with the signing of the Japan-Korea Annexation Treaty, beginning a period of Japanese rule of Korea that lasted until the end of World War II.
- 1922 – Irish Civil War: Irish National Army commander-in-chief Michael Collins was assassinated in an ambush while en route through County Cork at the village of Béal na mBláth.
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