Complex sentence: The Rev. Prof. Norman Walker Porteous (September 9,1898-September 12 2003) was a noted theologian and writer on Old Testament issues and the last surviving officer of the First World War.
Split into simpler sentences: The Rev. Prof. Norman Walker Porteous (September 9,1898-12 September 2003) was a noted theologian and writer on Old Testament issues. In his final years, he was the last surviving officer of the First World War.