Secretary of Defense Lloyd Austin said Tuesday that the US will increase its military presence in Australia in a buildup aimed at China.

In a joint press conference with Australia’s defense minister and foreign minister, Austin said that the US will increase its rotational forces in Australia. “That includes rotations of bomber task forces, fighters, and future rotations of US Navy and US Army capabilities,” Austin said.

Many countries in the region are not eager to get on board with the US’s confrontational approach to China. The prime minister of Papua New Guinea said this week that his country can’t afford to get caught between the US and China and said he told the US your “enemy is not my enemy.”

Indonesia’s president expressed similar concerns during a meeting of the Association of Southeast Asian Nations (ASEAN) in November, saying the ASEAN must not let the region turn into a frontline for a new Cold War.

Details on the rotational deployments aren’t clear, but they will likely focus on the Australian city of Darwin in the Northern Territory, where US Marines have been rotating through for years.

Foreign Minister Penny Wong and Defence Minister Richard Marles meet their US counterparts in Washington, discussing the rise of China in the Pacific as well as Australia's defence "capability gap". 

At a joint press conference after the talks, US Defence Secretary Lloyd Austin said the increased military cooperation would result in an "increased rotational presence of US forces in Australia". 

"That includes rotations of bomber task forces, fighters, and future rotations of US Navy and US Army capabilities that will also expand our logistics and sustainment cooperation," he said.

"We'll also continue to find ways to further integrate our defence industrial bases in the years ahead."

Visiting senior US military officers believe Australia is a "pot of gold at the end of the rainbow", as they eye off this continent's "prime" geography for future space operations.

General Shaw has warned a conflict in space in the next few years is a very real prospect, saying potential adversaries have already shown they can successfully shoot down satellites.

Australia's own Defence Space Command was only formally stood up in March, but General Armagno says this country already has the natural advantage of its southern-hemisphere geography and potential launch sites close to the equator.

The USA Air Force is planning to deploy up to six nuclear-capable B-52 bombers to Tindal air base near Darwin, as fears grow that China is preparing for an assault on Taiwan. 

"It's a great expansion of Australian commitment to the United States' war plan with China," says Richard Tanter, a senior research associate at the Nautilus Institute and a long-time, anti-nuclear activist.

"It's very hard to think of a more open commitment that we could make. A more open signal to the Chinese that we are going along with American planning for a war with China," Mr Tanter says.

Pine Gap is also undergoing a major upgrade

Major construction, funded by the U.S. and Australian governments, is underway in Australia’s Northern Territory for facilities that will be used by the U.S. Air Force, Navy and Marine Corps.

The facilities will support U.S. and Australian forces training to defend chains of small islands that would likely be an arena for any future conflict with China, according to former Australian assistant defense secretary Ross Babbage.

The allies are learning to conduct dispersed operations and deploy anti-ship missiles to island chains in the Western Pacific “to make it extremely difficult and dangerous for Chinese operations in a crisis,” including a conflict over Taiwan, he said by phone Wednesday.

The Australian government will likely announce more initiatives in the northern Australia before the year is over, Babbage said.