Australia's defence budget is the highest in Oceania. Australia allocates about 1.90% of its GDP (estimated at US$25,912M) for its defence budget. Its percentage of GDP allocated to defence spending is the highest in Oceania.
Australia has the largest military force in Oceania. Australia has a military of 88,700 personnel, with 58,600 active (largest in Oceania) and 30,100 in reserve, making up 3.8 military personnel per 1000 in population. Its per-capita military is the second-highest in Oceania.
Australia's battle tank force is the largest in Oceania. On land, Australia has a mobile force of 59 tanks. For aerial defence, Australia has an air force of 146 military aircrafts and 39 attack helicopters.Australia has the largest naval fleet in Oceania. Australia has a naval fleet of 21 vessels, including 6 non-nuclear submarines. The naval fleet also possesses numerous warships, including 10 frigates and 2 destroyers.