The Army Comrades Association (ACA), later named the National Guard and better known by the nickname 'The Blueshirts' was an Irish extra-parliamentary security organisation active in the 1930s.

It consisted largely of former members of the Irish Republican Army who were pro-Treaty during the Irish Civil War. The purpose of the organisation was to provide physical protection for political groups such as the Cumann na nGaedheal from intimidation by the anti-Treaty IRA.

The groups leader was Eoin O'Duffy, an Irish political activist, soldier, and police commissioner.

Presented by Maurice Manning with contributions by Ernest Blythe.

First broadcast 6th July, 1974

An Irish radio documentary from RTÉ Radio 1, Ireland - Documentary on One - the home of Irish radio documentaries