5th Infantry Battalion (Victorian Scottish Regiment)
A Staff Officer assists a commander or in headquarters managing correspondence, such as preparing presentations and briefs, calendar management, travel bookings, administrative tasks and chasing returns. Whilst there are stoaff officers in all branches of defence, I think this is an army button.
Post 1952 Ansett Airline of Australia button
Thanks to Cam for the update.
Showing the wedge-tiled eagle upon the map of Australia.
For any comment or query, please use the Contact page.