Five serving members of the army have been arrested on suspicion of belonging to the group.
Reclaim Australia is attracting a broad assortment of supporters based on a loosely defined platform of anti-Muslim, anti-immigration and economic protectionist sentiment.
AAP/Mick Tsikas
Reclaim Australia is not the first radical nationalist movement to emerge in Australia, and it has applied the lessons of past groups' mistakes to attract a broader range of people to its rallies.