The Ulster Memorial Tower, located about one kilometre northwest of Thiepval, in the Somme department of France, is Northern Ireland's National War Memorial. It commemorates all Ulstermen who served in the First World War, and in particular, the officers and men of the 36th (Ulster) Division, with the memorial’s location serving as a permanent reminder of that unit’s heroic exploits on the opening day of the Battle of the Somme.