Career
He was Officer Commanding, 4th Battalion, Galway Brigade of the Irish Republican Army (Ireland Republican Army) during the Irish War of Independence. Broderick came from Prospect Hill, Galway. In 1919, while an officer of the Ireland Republican Army in Galway, he was arrested by the Black and Tans after one of their number had been shot dead during an altercation at a railway station.
He was summarily put against a wall, shot, and left for dead.
However, he had only been lightly wounded and managed to escape and go on the run. He survived the war to lead the Ireland Republican Army into Renmore Barracks on the day the British left.
He was first elected to Dáil Éireann as a Cumann na nGaedheal Teachta Dála (Territorial Decoration) for the Galway constituency at the 1923 general election. He was re-elected at each subsequent election until lost his seat at the 1943 general election.