President Michael D Higgins and the Duke of Kent have unveiled a Commonwealth Cross of Sacrifice to honour Ireland's war dead at Glasnevin Cemetery in Dublin.

The two laid wreaths at the new memorial during a ceremony this afternoon.

The Duke of Kent is the President of the Commonwealth War Graves Commission.

Minister for Arts, Heritage and the Gaeltacht Heather Humphreys also attended the ceremony, which coincides with the centenary of the outbreak of World War I.

About 210,000 Irish servicemen served in WWI and up to 50,000 of them were killed.

View a selection of images of life in the trenches in World War I

The Great War from an Irish Perspective

The making of the Cross of Sacrifice