 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".