Napier RSA president John Purcell said more veterans had served in Afghanistan than in Vietnam.
Mr Fraser said a lot of veterans would not acknowledge they were a victim of PTSD.
"But you talk to the families and they will tell you because they see it - it is more common than you would think."
Mr Purcell said he had seen it for himself as someone he knew, who had served in Malaya, had effectively closed himself inside his house and would not even answer the phone.
"We need people to come forward and talk to us - or we can go and talk to them," Mr Fraser said.
Many veterans had also struggled around their homes, unaware they could get assistance for everything from getting the lawns mowed, getting access ramps put in, house cleaning and short term attendant care. There were also financial assistance benefits above pensions.