The organisation's latest proposal to Lake Macquarie City Council includes a massive military heritage headstone and a commemorative walkway.

However before council considers making a decision on the proposal, the group has to show it has the backing of the community.

Friends of Rathmines president Alec Howard is urging everyone to write a letter of support for the project.

"It's not just about the base - it's about the people that were here and the things they did," Mr Howard said.

"We want to pay tribute to the people who served here and recognise the park for what it was. And there is no better way to do that then a commemorative walkway."

The headstone would be located along Dorrington Road at the site of the base's former guard house.

Mr Howard said there are few different design options for the headstone, which would be about 4.2 metres wide with flag poles and a metal cut-out of a catalina.

The council has indicated it will only support the headstone if sufficient funding is found from a source outside of council.

Mr Howard said the project already had a backer, anonymous, who would partially fund the project - now he needs the community to voice its support.

Mr Howard has already done some basic costing and planning for the proposal, which he compared to Brays Bay Reserve in Sydney, a tribute to the people who served on the Kokoda Track.

"We want to do something similar to Brays Bay, but for the air force."

Mr Howard said while there was a memorial at the park, the former RAAF flying boat base deserves more recognition as it was once one of the most important bases in Australia.

"It played a pivotal role in the defence of the nation, by turning back the enemy forces [in the Pacific in World War II]," Mr Howard said.

"The rich history of this great base is slowly being eroded - many people don't realise what the park used to be and we want to change that."

A council spokesperson said in the development of the council's ongoing budgets, signage and interpretation of Rathmines Park was regularly considered, however there was no guarantee of funding, as this project was one of many projects and services that competed city-wide for funding.

"The community may wish to offer support for further heritage interpretation and recognition of Rathmines Park, and council will consider such requests in its development of priorities in annual budget considerations," the spokesperson said.

■ Any letters of support can be emailed to info@lakesmail.com.au or dropped off at the Lakes Mail office at 35 Yambo Street, Morisset. Please include your name, suburb and contact number.