Australian soldiers who fought the largest and most sustained battles of Australia's war in Vietnam have collectively been recognised for their gallantry.
Sunday marked half a century since the Battle of Coral-Balmoral, an almost continuous series of fierce attacks fought over 26 days from May 13 to June 6, 1968.
Twenty-six Australians died and 100 were wounded.
It's estimated that 300 North Vietnamese were killed in these actions, but exact figures will never be known.
Governor General Sir Peter Cosgrove, who is also a Vietnam veteran, has awarded unit citations for gallantry to those directly involved, while those who flew support missions or were forward deployed are also entitled to wear the citation insignia.
Family members of deceased veterans are also encouraged to apply for the medals.
Sir Peter praised the exceptional leadership and soldiering skills and their sustained and outstanding performance in the face of overwhelming odds.
Veterans of eligible units should apply directly to the defence department through a medals application form - www.defence.gov.au/medals.
Citations have been awarded to:
*1st Australian Task Force (Forward),
* 1st Battalion, the Royal Australian Regiment,
* 3rd Battalion, the Royal Australian Regiment,
* A Squadron, 3rd Cavalry Regiment,
* C Squadron, 1st Armoured Regiment,
* 12th Field Regiment, Royal Regiment of Australian Artillery,
* 1st Field Squadron, Royal Australian Engineers.
* No 9 Squadron RAA161 Reconnaissance Flight,
* 161 Reconnaissance Flight.