The defence force has confirmed a 28-year-old soldier was killed during an exercise at the Mount Bundey training area in the Northern Territory on Monday evening.
"Next of kin have been notified," a defence spokesman said in a statement.
"We request that the privacy of defence members and families is respected at this time.
The Mount Bundey area, about 120km south of Darwin, is used for ADF and US forces training, including live-fire exercises.
NT Chief Minister Lia Finocchiaro offered condolences to the family of the killed soldier.
"The support of our entire community is there for all of our service personnel who will be feeling this loss immensely," she told reporters in Darwin on Tuesday.
NT emergency authorities assisted with two medical evacuations to Royal Darwin Hospital by helicopter at 7.30pm local time on Monday.
A further three people were medically evacuated by plane two hours later.
NT police have sent personnel to the training facility to help with investigations into the death.
Prime Minister Anthony Albanese said the nation's thoughts were with the family and friends of the killed soldier and his injured colleagues."There are no safe or easy days for those who serve in our country's name," he said in a statement."This sad incident is a terrible reminder of what families take on when their loved one bravely puts on our nation's uniform."
Federal Veteran Affairs Minister Matt Keogh also extended his condolences to the fallen soldier's family.
"No matter how someone in our Australian defence force passes away, it's tragic and we want to make sure that their families and the people who work with them are supported whenever that occurs," he told the ABC.
"We also have been making sure our training systems are fit for purpose and the training is conducted in the safest way possible."
It was recognised there were unique circumstances when it came to defence force training and there were high levels of risk, he said.
Opposition Leader Angus Taylor said the incident was another tragic reminder that defence personnel were putting their lives on the line even when they were not on a mission.
The coalition wished the five soldiers injured in the incident a full and swift recovery, Mr Taylor added in a joint statement with opposition defence spokesman James Paterson.
The death comes months after an ADF member was killed in a training exercise in Jervis Bay.
Warrant Officer Class Two Lachlan Muddle, a Special Air Service Regiment operator, died after colliding with a fellow soldier during a parachuting exercise.
In October 2025, a soldier died and two others were hospitalised after a truck rolled over during an army training course.
Jack Fitzgibbon, the son of former defence minister Joel Fitzgibbon, died in March 2024 after a parachuting incident at the Richmond RAAF base outside of Sydney.
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