After his football career, Hillis enlisted in the Royal Australian Navy, initially serving as a radio electrician on a range of ships and rising through the ranks to the level of a RAN Commander at the point of his discharge in March 1970.[2]
Notes
^Holmesby, Russell; Main, Jim (2014). The Encyclopedia of AFL Footballers: every AFL/VFL player since 1897 (10th ed.). Seaford, Victoria: BAS Publishing. p. 395. ISBN978-1-921496-32-5.
^Cullen, Barbara (2015). Harder than football : league players at war. Richmond, Victoria: Slattery Media Group. p. 345. ISBN978-0-992379-14-8.