Winston Noble · Wikipedia (en)
For “Military service, Australian Army” FROM 1942 TO 1943 of Henry Winston Noble
In 1942 he joined the Australian Army and served in the 7th Field Ambulance, being discharged a year later with the rank of captain.
Wikipedia is preferred here over the parliamentary register, whose Military Service field reads "Royal Australian Army Medical Corps, World War I" — impossible for a man born in 1909 and evidently a slip for World War II. The tree already carries an Ancestry citation to the Australian WWII service records giving his age as 31.