Potential recruits can sample the first ever Virtual Reality experience of the Defence Forces today.
The army, Air Corps and Naval Service are hosting an Open Day at Farmleigh House in the Phoenix Park from 11am to 5pm.
Some of the star attractions will include a Michael Collins' armoured Rolls Royce and unarmed combat and weapon demonstrations.
Vintage vehicles, Army brass and pipe band recitals, field cooking and a Cavalry motorbike escort will also be on show.
Members of the public will also be able to trace their own family's military history, helped by a guide in the Military Archives.