Australia and other US security allies are under pressure from US President Donald Trump to increase defence spending.

Marles said the federal budget would contain an increase of A$10.6 billion (US$6.66 billion) for defence over the next four years, part of a previously announced A$50 billion boost over a decade, which he said was the most significant increase in defence spending since the end of the Second World War.

“Part of the A$10.6 billion sees bringing forward an additional billion dollars and that is because of the need to accelerate Australia’s capability and development,” Marles said at the Avalon Air Show in Victoria.

“This will see us have ready HMAS Stirling, the Henderson Defence Precinct for the establishment of the Submarine Rotational Force West.

“This will see us move forward at a faster pace in establishing the Guided Weapons and Explosives Enterprise,” he added.

Up to four US and one British-commanded nuclear-powered submarines will rotate through Australia’s biggest naval base, HMAS Stirling in Western Australia, from 2027 under AUKUS.

“The earlier spending will also accelerate the purchase of a frigate into the service fleet this decade,” he said.

Today, Australia said it had received the first two of 42 High Mobility Artillery Rocket Systems (HIMARS) launcher vehicles ordered from Lockheed Martin, while the manufacture of guided multiple launch rocket systems (GMLRS) would begin in Australia this year.