Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Z Special Unit, also known as Z Force or the Services Reconnaissance Department (SRD), was a joint Allied special forces unit formed during the Second World War to operate behind Japanese lines in Southeast Asia. Predominantly Australian, Z Special Unit was a specialist reconnaissance and sabotage unit that included British, Dutch, New Zealand, Timorese and Indonesians, predominantly operating on Borneo and the islands of the former Netherlands East Indies.The unit carried out a total of 81 covert operations in the South West Pacific theatre, with parties inserted by parachute or submarine to provide intelligence and conduct guerrilla warfare.