Outside court Vietnam veteran David Page said he felt better now Moselen had been given the maximum penalty.
"If he wants to wear the medals does he want the diseases that go with them.'' Mr Page said.
But he said he did not understand why anyone would want to be associated with a war that in the finish had been so unpopular.
"We (Vietnam veterans) are a tight-knit group of people, what he has done has been insulting.''
Brian Gore, a Levin lawyer and Vietnam veteran who was wounded in the war, said he would have liked the chance to express the views of the Vietnam Association to the court but was denied.
Mr Gore said Moselen's actions had caused much distress and pointed out the maximum penalty in Australia is six months in prison.
Judge Lynch said the Act under which Moselen was charged needed revisiting and noted the case had been a long journey for Vietnam veterans who had suffered significant health difficulties.
Moselen's lawyer Daniel O'Neill told the court his client wore the medals because he felt entitled to do so.
He said Moselen claimed to have spent a month in the wartorn country in 1974, which he believed gave him the right to wear them.
Mr O'Neill added that when Moselen was elected president of the Otaki RSA it was made known that he was the first non-serving person to hold that role.