The initial name for the organisation was the "Irish Ex-Servicemen's Organisation". This was soon converted to the Irish "Óglaigh Náisiúnta na hÉireann". The new organisation adopted an emblem resembling the cap badge of the Defence Forces and incorporated the number 1 into its design signifying the amalgamation of the different groups. Since this time the Organisation has been known as the O.N.E. and ONE forms part of the Organisation's emblem to this date. The first President of the Organisation was Major General Hugo McNeill and the vice-Presidents were Senator Victor Carton PC, Lieutenant Colonel Fred O'Connor, Mr. Eoin O'Riain B.L. and Mr. Thomas Holt. Major Patrick J McDonagh was Chairman of the National Executive Committee and Commandant Peter Duffy was the Honorary National Secretary.