The ceremony to mark the annual National Day of Commemoration has taken place at the Royal Hospital, Kilmainham, Dublin.
The ceremony commemorates all Irish men and women who have died in foreign wars and on service with the United Nations.
Following an inter-denominational prayer service, the President, Mary McAleese, laid a wreath in memory of those killed.
Also present were the Taoiseach, Bertie Ahern, and several government ministers.
Many veterans also attended, including some who fought in World War II.
Events are also taking place around the country as part of the National Day of Commemoration.
A wreath-laying ceremony took place at Islandbridge War Memorial Gardens in Dublin.
And in Co Donegal, the first public ceremony for those killed in Inishowen in World War II took place in the Fort Dunree Museum.
Ceremonies were also being held in the United Kingdom today to mark the 60th anniversary of the end of World War II.