Scheduled to be held at 2pm at Belton Park in Little Street, Forster, sub-branch president Graham Kelly said it was a significant day for Vietnam veterans around the country.

"It's to commemorate those who served in the Vietnam War," he said.

"They were treated a bit badly when they came home in the 1970s."

Previously known as Long Tan Day, Vietnam Veterans Day was officially recognised by Prime Minister Bob Hawke in 1987 as a day to commemorate all those who served in Vietnam.

It is held around the country every year on August 18.

Mr Kelly said this year's commemoration will also mark a number of other significant milestones, including the 50^th anniversary of the Battle of Binh Ba and the 20^th anniversary of the Great Lakes sub-branch.

With around 30 active members, the sub-branch's anniversary is an important one and will be celebrated back at its headquarters on Kularoo Drive after the Veterans Day commemoration.

Fought over three days from June 6 - 8, 1969, the Battle of Binh Ba was considered one of the more significant actions Australian soldiers were involved in during the Vietnam War.

It took place in the village of Binh Ba, in Phuoc Tuy Province, South Vietnam.

All are welcome at Sunday's commemoration.

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