One soldier has died and two others have been taken to hospital after a truck rollover during an army training course near a key garrison city.

The single-vehicle crash was reported on Hervey Range Road west of Townsville, in north Queensland, just after 6.30pm on Wednesday.

The Department of Defence confirmed the soldier's death on Thursday.

The incident occurred during a training course at the Townsville Field Training Area.

"We request that the privacy of defence members and families is respected at this time," the department said.

Multiple paramedic units and a rescue helicopter attended the scene, Queensland Ambulance said.

One patient "with life-threatening injuries" was assessed at the scene.

A man in his 30s was flown to Townsville University Hospital in a stable condition w

See Full Page