The RSL Millicent Sub-branch and the Wattle Range Council are planning an event to mark the centenary of the Millicent Cross of Sacrifice.
The event, to be held on December 5, will consist of a service at the cenotaph followed by a luncheon for dignitaries and invited guests.
The Cross of Sacrifice was unveiled in 1923 by the then Governor of South Australia, His Excellency Lieutenant General Sir Tom Bridges.
The organising committee will be inviting the current Governor of South Australia, Her Excellency the Honourable Frances Adamson AC, to officiate at the service, along with many other community leaders.
Funded by public subscription and made of Grampians granite, the Cross of Sacrifice has the names of dozens of local service personnel who fell in World War I, World War II and the Vietnam War.
It is believed to be the only war memorial in Australia to carry an inscription attributed to late American president Abraham Lincoln.