Thousands of Australians have attended dawn services around the country to commemorate ANZAC Day.

The services mark the 99th anniversary of the dawn landings by the Australian and New Zealand Army Corps at Gallipoli in 1915, when thousands of troops lost their lives.

At the Sydney Cenotaph, New South Wales Governor Professor Marie Bashir read the dedication, a traditional part of the service.

"As the dawn is even now about to pierce the night, so let their memory inspire us to work for the coming new light into the dark places of the world", she said.

The ode, from Laurence Binyon's poem 'For the Fallen' was read by the school captain of the John Therry Catholic School in Rosemeadow, Thomas McGill.

"At the going down of the sun and in the morning we will remember them", Mr McGill said.

Britain's Duke and Duchess of Cambridge joined 35,000 people at a national ceremony at the Australian War Memorial in Canberra, the first British royals to attend an Anzac Day service in Canberra since Queen Elizabeth and Prince Philip in 1970.