The Australian War Memorial roll of honour lists the names of 102,000 service men and women killed in conflicts over a century.
But there's one glaring omission - Private Dal Abbott.
Private Abbott was a 21-year-old national serviceman killed in the Vietnam War Battle of Fire Support Base Coral in 1968.
Although there's a space for his name on the roll, he's never been listed.
That's because his parents objected, veterans believe, on the grounds that he died in a war they vehemently opposed.
Private Abbott's remains weren't returned to Australia. He was interred at the Australian cemetery at Terendak, Malaysia.
Now the veterans believe it's time to right a wrong and they are pressing the AWM and Prime Minister Julia Gillard for his name to be placed on the roll.
Garry Prendergast, who was a member of Private Abbott's 1st Battalion (1RAR), said as his parents were now dead, their objections could no longer apply.
In a submission to the AWM, he said the original decision not to list his name was wrong.
''They capitulated incorrectly to unfair political anti-war influence reflecting the then morally wrong and negative attitude of the general public at the time towards the Vietnam veterans,'' he said.
''It was wrong and must be rescinded.''
Fellow 1RAR veteran Don Elbourne agreed parents had a say in what became of a son's remains and in finalising his personal affairs. But he questioned whether this should apply to denying a son who died in war an Australian tradition of commemoration on the AWM roll of honour.
''His parents are the only ones in the history of our national shrine of remembrance, the AWM, to have denied commemoration of a child on the roll of honour,'' Mr Elbourne said.
In a letter to the Prime Minister, Mr Elbourne said even if Private Abbott's parents held their son's sacrifice was worthless, the larger defence family didn't agree.
''Please help us right the wrong done to Dal Abbott by supporting our efforts to have his name added to the roll of honour at the AWM, even though it's 45 years late,'' he wrote.
Private Abbott was the number two member of a M60 machine gun crew involved in an attack on an enemy bunker position on May 30, 1968. While under fire, he tried to help his gunner clear a jam and was struck by several rounds to the head and killed instantly.
The initial decision not to place his name on the roll of honour dates from 1973, when the AWM wrote to families of soldiers killed in Vietnam seeking to ensure names and other details were correct.
Although sympathetic to the view of veterans, the AWM reaffirmed its decision regarding Private Abbott on a number of occasions, most recently in 2008. In a letter to Mr Prendergast in 2009, then-AWM director Steve Gower said he did not know why Memorial management sought permission from the next-of-kin.
''But once it was refused, you cannot ignore it - that would be high-handed and disrespectful,'' he said.