Bomb sniffer dogs will be deployed and airport-style security checks will be in place for a commemorative service at Fromelles in northern France to mark the centenary of the worst day in Australian military history.
More than 100 French gendarmes will also be on guard at Tuesday's event as part of tight security in the wake of last week's terror attack in Nice and the Paris attack last November.
More than 2500 people are expected at the Pheasant Wood Military Cemetery near where Australian troops disastrously attacked German lines on July 19, 1916.
In the 14-hour action known as the Battle of Fromelles, Australian units in their fist major action on the Western Front suffered more than 5500 casualties, including more than 1900 dead.
Major-General Dave Chalmers of Australia's Department of Veterans Affairs said a high level of security had already been planned for the Fromelles service following the terror attacks in Paris last year.
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During rehearsals for the event on Monday, the bells of the village church rang at midday, prompting Australian troops and visitors at the cemetery to join the French nation in observing a minute's silence in tribute to the victims of the last Thursday's terror attack in Nice.
In that attack French-Tunisian man Mohamed Lahouaiej-Bouhlel killed 84 people as he drove a truck through crowds celebrating Bastille Day on the Nice waterfront.
Maj Gen Chalmers said Australian authorities were working closely with the French to determine the level of security required at Fromelles.
"We're not aware of any direct threat to Australians or Australian commemorative services.
"We've reviewed our security levels as a result of the Nice attack and we're comfortable that what we've got in place is appropriate for the threat," he told AAP.
Sniffer dogs will sweep the area before the event starts and airport-style security screening will be in place in a large tent where people will enter the site.
"We've done as much as we can do without taking away from the solemnity of the service itself," Maj Gen Chalmers said.
