I just thought it was interesting as to the differences in hats for military & civilian.
The Slouch Hat as used by the military is fur felt and has indentations in its styling. Nice bit of history in this link.
http://www.army.gov.au/Our-history/t...The-slouch-hat
They are made by Akubra & Mountcastle. (Who also make civilian hats)
The Barmah is more of a civilian work/fashion/practical hat.