Michael Collins, Commander-in-chief of the Irish Free State Army, is shot dead in an ambush during the Irish Civil War.

Michael Collins was an Irish revolutionary, soldier and politician who was a leading figure in the early-20th century struggle for Irish independence. During the War of Independence he was Director of Intelligence of the Irish Republican Army (IRA) and a government minister of the self-declared Irish Republic. He was then Chairman of the Provisional Government of the Irish Free State from January 1922 and commander-in-chief of the National Army from July until his death in an ambush in August 1922, during the Civil War.

A commander-in-chief or supreme commander is the person who exercises supreme command and control over an armed force or a military branch. As a technical term, it refers to military competencies that reside in a country's executive leadership, a head of state, head of government, or other designated government official.

The Irish Free State, also known by its Irish name Saorstát Éireann, was a state established in December 1922 under the Anglo-Irish Treaty of December 1921. The treaty ended the three-year Irish War of Independence between the forces of the Irish Republic – the Irish Republican Army (IRA) – and British Crown forces.

The Irish Civil War was a conflict that followed the Irish War of Independence and accompanied the establishment of the Irish Free State, an entity independent from the United Kingdom but within the British Empire.