Harry served in the 5th Battalion of the Wiltshire Regiment in Mesopotamia in the campaign against the Ottoman Empire. He was killed in action on the 25th January 1917 in an attack on a Turkish position. Harry is buried in the Amara War cemetery in Iraq. He is also commemorated on the war memorial to the fallen of the First World War in All Saints Church in the village of Maiden Bradley, Wiltshire.

Alan Dennis