Alastair MacKenzie comes from a military family of long standing and he served as a para-trained platoon commander for 12 months with the New Zealand infantry on combat operations in South Vietnam and in the special forces of South Africa, Oman and the UK, where for four years he was troop commander in the 22nd Special Air Service Regiment. After his retirement as a full-time Army officer he enjoyed a successful commercial career with Royal Ordnance and British Aerospace before moving to consultancy roles. In civilian life he retained an involvement with the Territorial Army as an SAS officer and retired with the rank of lieutenant colonel in 2001. He obtained his PhD in politics in 2005 and is the author of works including Special Force: The Untold Story of 22nd Special Air Service Regiment (SAS) and The Sounds Soldiers’ Memorial – Stories of the Fallen. He lives on the South Island of New Zealand.