Diarmuid O'Hegarty was an Irish revolutionary and civil servant.

Born in Cork, O'Hegarty was prominent in the re-organisation of the Irish Volunteers after the 1916 Easter Rising. He was was vice-commandant of the Irish Republican Army's 1st Dublin Brigade and became IRA Director of Organisation in 1920. Cork (Corcaigh in Irish) is the second city of the Republic of Ireland. ... Irish Volunteers - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... 1916 is a leap year starting on Saturday (link will take you to calendar) // Events January-February January 1 -The first successful blood transfusion using blood that had been stored and cooled. ... Easter Rising - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... This article primarily deals with the Irish Republican Army up to 1922. ...

Supportive of the Anglo-Irish Treaty, in September 1922 he was appointed commandant general, a member of the Army Council, and Director of Intelligence of the National Army Signature page of the Anglo-Irish Treaty Anglo-Irish Treaty refers to a agreement between the British government and representatives of the (extra-judicial) Irish Republic which concluded the Anglo-Irish War. ... The Irish Defence Forces are the army, navy and air force of the Republic of Ireland. ...

In March 1923, he was appointed Secretary to the Executive Council of the Irish Free State. 1923 was a common year starting on Monday (link will take you to calendar). ... The Executive Council (Irish: Ard-Chomhairle) was the cabinet and de facto executive branch of government of the 1922-1937 Irish Free State. ... The Irish Free State (Irish: Saorstát Éireann) was (1922–1937) the name of the state comprising the 26 of Irelands 32 counties which were separated from the United Kingdom of Great Britain and Ireland under the Irish Free State Agreement (or Anglo-Irish Treaty) signed by British and...