As part of the federal government's National Defence Strategy unveiled in April, eligibility criteria will be expanded to allow more people to join the defence force.
From July, eligible New Zealanders will be able to apply to join the ADF and permanent residents from the United Kingdom, United States and Canada can do the same from January 2025.
Once they have served for 90 days, they would be expected to become Australian citizens, Defence Personnel Minister Matt Keogh said.
"We have constrained this to people that are already permanent residents, that have a commitment and attachment to Australia," he told Sky News.
"What we're doing is fast-tracking them into citizenship through joining the Australian Defence Force."
Australia's low unemployment rate made it difficult to hire defence staff and this announcement was aimed at increasing potential recruits, Mr Keogh said.
Richard Marles says Defence is expanding its eligibility criteria to enable more people to join. (Joel Carrett/AAP PHOTOS)
Non-citizens who want to join the defence forces must have lived in Australia for at least one year before applying, must not have served in a foreign military in the previous two years and must be able to attain Australian citizenship.
Deputy Prime Minister Richard Marles says this is necessary as the defence landscape shifts.
"The Australian government has chosen to grow the Australian Defence Force because it is essential to meet the nation's security challenges through the next decade and beyond," he said.
The opposition is not opposed to the plan, but foreign affairs spokesman Simon Birmingham says it is only necessary because of the "failings of the government".
"The government's defence policy has been mired in reviews and delays and things that don't build the confidence to get people to join in the first place," he told Sky News.
"We want to see, ideally, Australians wearing the Australian uniform."
This comes as the Albanese government defends its plans for the nation's military.
In a speech at the Australian Strategic Policy Institute Defence Conference on Tuesday, Defence Industry Minister Pat Conroy will link the government's actions to those of Labor leader John Curtin, who led Australia through World War II.
"On coming to government, the easy thing for us to do would have been simply to tinker at the edges of Defence," he will say.
"But it would have been the wrong thing to do.
"Instead, our government identified a need for rational and robust strategy to guide some of the biggest and most consequential investments a nation can make."
The federal budget is boosting funding for Australia's defence forces. (Dave Hunt/AAP PHOTOS)
The federal budget in May secured an extra $5.7 billion for Defence over the next four years, and an addition $50 billion over the decade.
But ASPI's budget analysis warns the government's plans won't improve the nation's military capabilities for at least a decade as Beijing pledges to "crush" foreign forces.
Mr Conroy is expected to set out the manufacture of guided weapons and explosive ordnance, outlining how the government will work with defence industry and international partners.
It will be backed with a $16 billion to $21 billion commitment in the rebuilt Integrated Investment Program over the next decade.
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