1920    Irish War of Independence: In Dublin, 31 people are killed in what became known as "Bloody Sunday". This included fourteen British informants, fourteen Irish civilians and three Irish Republican Army prisoners.

1920    Irish War of Independence: Kilmichael Ambush - The Irish Republican Army ambush a convoy of British Auxiliaries and kill seventeen.

1921    Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.

1922    Author and Irish Republican Army member Robert Erskine Childers is executed by an Irish Free State firing squad for illegally carrying a revolver.