Transcription of and commentary on the diary of Lieutenant Manuel de Jesus Pires, a Portuguese supporter of the Allied cause in World War II who assisted Australian forces against the Japanese. After assisting evacuation from Timor during the Japanese occupation he arrived in Australia where he was recruited and employed confidentially by Special Operations Australia (SOA) a.k.a. Services Reconaissance Department (SRD) (as the "Allied HQ Geographical Section"). He returned by submarine to Timor and led a brief resistance to the Japanese until captured in 1943. While his diary entries only cover the period December 1942 to May 1943 Cardoso comprehensively relates events in Portuguese Timor from the 1920s to after World War II.