David St Alban Dexter (8 January 1917–15 March 1992) was an Australian military historian, commando, diplomat and university administrator. A 1940 graduate of the University of Melbourne, Dexter enlisted in the Second Australian Imperial Force in 1940. He volunteered for commando training. He was commissioned as a lieutenant and transferred to the 2/2nd Independent Company. The 2/2nd Independent Company was sent to Portuguese Timor, where it waged a guerrilla war against the Japanese after they invaded the island in February 1942. He returned to Australia with the unit in December. In June 1943 it was sent to New Guinea, where Dexter was wounded while carrying out an ambush on a Japanese force. In 1945, it went to New Britain. Shortly before the end of the war in August 1945, he assumed co