Frank Walker is a veteran journalist. His newspaper roles have included being chief reporter for the Sun-Herald covering defence, veterans' affairs, national security and terrorism.

He's also worked on the Sydney Morning Herald, the National Times, for News Limited in New York, and for Deutsche Welle international radio in Germany.

In 2009, Hachette published his first book, The Tiger Man of Vietnam the remarkable true story of the secret war of Captain Barry Petersen in the Central Highlands of Vietnam.

It was a bestseller. Frank followed this with his bestselling Ghost Platoon in 2012, Maralinga in 2014 and Commandos in 2015. He lives in Sydney with his family.