Cowra's dawn service was momentarily interrupted after a man was arrested for assaulting a police officer and using offensive behavior.

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Despite the man's efforts to disrupt the service, Cowra RSL sub-Branch President, Stephen Overman told the hundreds in attendance that Australians should never forget the sacrifice made by all defence force personnel.

"From the beaches to the deserts, the jungles to the ocean and of course the skies and in the cities, they fought and they served for one thing, to keep us free," he said.

"In all corps and all services, we are forever in their debt, we are the lucky country for a reason."

He also encouraged the audience to use the day to celebrate the lives of those who served.

"Do not feel guilty in feeling joyous today either, we must reflect on the good times and celebrate the lives of those that cannot be here today and others lost long ago," Mr Overman said.

Guest speakers for the 11am River Park service were two staff cadets from the Royal Military College Duntroon, Charles Davis and Heather Finlay.

Staff Cadet Davis said Anzac Day commemorations evoked deep emotions in all Australians and New Zealanders.

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"Some have relatives who were there on the day, some who knew family members who went and those, like most of us here, who feel the pride of the Anzac spirit," he said.

"The fact that Anzac Day is a day for the people is evident in the way that we mark it, it is not a day of military parades and power, it is a day of gatherings of veterans, reunions, services, community involvement and of the reflection and honour of our forebearers."

Staff Cadet Finlay, who is from New Zealand, also recited "The Ode" in Maori. She said both nations must continue to build the Anzac legacy.

"The men and women of our defence forces serve our country and overseas and carry on the spirit and the legacy of the Anzacs," she said.