 Having offered his services to the Australian government on his return from New Guinea , Pentland rejoined the RAAF on 17 June 1940 . He undertook the course at Central Flying School in Camden , New South Wales , and was posted as an instructor to elementary flying training schools in eastern Australia , including Brisbane , Tamworth , Temora , Bundaberg , and Lowood . Addressed by a young pilot at one school as " Pop " , Pentland responded in front of the large audience , " I 'm sorry son , but I don 't remember sleeping with your mother " . He was promoted to flight lieutenant in October 1941 , and joined No. 1 Communication Flight in June 1942 . Based in Victoria at Laverton and , later , Essendon , it was primarily engaged in army and naval cooperation , and operated as far afield as the Northern Territory and New Guinea . 
