text: In Dublin, a military ceremonial event was held at the War Memorial Gardens at Islandbridge.
  A military service was also held at the Mall in Cork.
  Irish President Michael D Higgins travelled to Thiepval in France to pay tribute to the Irishmen who died while serving in the British, Commonwealth or US armies.
  He was accompanied by the the Irish minister for arts, heritage and the Gaeltacht, Heather Humphreys.
  The village of Thiepval in France is close to where the 36th Ulster Division began their attack on German lines on 1 July 1916 and is now the site of the Ulster Memorial Tower, a 70ft (21m) monument which commemorates their sacrifice.
  Men from all over the island of Ireland fought at the Somme, and the service in France will also be attended by representatives from the British and French governments also.
  Many people from the Republic of Ireland and Northern Ireland, including relatives of Somme veterans, have travelled to Thiepval for the commemoration event.
  The ceremony in Dublin began at 07:28 local time - the time the battle started 100 years ago.
  It was attended by members of the Irish Defence Forces and the Royal British Legion.
target: The centenary of the Battle of the Somme has been marked with ceremonies in the Republic of Ireland.