I know for certain the US flag does this, but does it carry the same definition regarding the Australian Flag:
A flag flown or displayed up side down signifies:
- A sign of distress (rooted from maritime or military traditions)
- Political Protest (like distrust towards government or authority)
- It’s to protest over government policies (flex that in Canberra)
- It’s a naval SOS signal when a ship is under attack or sinking
- It’s also a SOS signal when military outposts are under attack
- Only displayed or shown during extreme peril & danger
A flag flown or displayed in reverse signifies:
- Moving forward and refusing to retreat (it has battlefield origins)
- Mainly exclusive to law enforcement (police) or the military (ADF)
- It’s placed in reverse on combat uniforms as a symbol to charge forward
- The patch is placed on the right shoulder on soldiers (like ADF personnel)
- Right side placement is only common in police cruisers / military vehicles
- In aviation: the flag on aircraft typically flies alongside wind direction


Bumping this. As fun as the snarky junkposts are, this is an actual, authoritative answer.
Since OP is asking what’s “allowed”, they’re probably asking what the Government’s laws or guidelines are. Here is a more detailed guide, which answers more of OP’s questions: https://www.pmc.gov.au/honours-and-symbols/australian-national-symbols/australian-national-flag/australian-national-flag-protocols @animemann80@feddit.online
Fun fact, the vertically-inverted flag (“upside-down”) is not a recognised symbol in Australia. It’s a US-culture import, and it makes it easy to spot possible brainworms from the US circus. “Do not fly the flag upside down, even as a signal of distress.”