The New Zealand Defence Force has confirmed that a serving member of the New Zealand Army has died in a traffic accident in Canberra.

Major Aaron Couchman, who joined the Army in 1990, was off duty and cycling when the accident happened on Saturday morning.

Chief of Army Major General John Boswell says Major Couchman was a proud and determined officer.

'As a man he embodied drive and professionalism.

'He was a good bloke, a friend and mentor to many. He will be sorely missed by those of us fortunate enough to have known him.”

Major Couchman was posted to HQ Joint Operations Command in Canberra and had previously held senior positions at the Training and Doctrine Command in Waiouru.

Major General Boswell said the focus now was on supporting Major Couchman's family.

'Our thoughts and our full support are with Aaron's family, friends and colleagues."