Complex sentence: The Danger Tree had been part of a clump of trees located about half way into No Man's Land and had originally been used as a landmark by a Newfoundland Regiment trench raiding party in the days before the Battle of the Somme.
Split into simpler sentences: The Danger Tree had been part of a clump of trees located about half way into No Man's Land. The tree had originally been used as a landmark by a Newfoundland Regiment trench raiding party in the days before the Battle of the Somme.