Dan attends the Menin Gate for the 100th anniversary commemoration of The Battle of Passchendaele.
Dr Adrian Goldsworthy is a historian and novelist who specialises in ancient Roman history. His latest book is, Pax Romana.
Craig Nelson is the author of New York Times bestseller, 'Rocket Men: The Epic Story of the First Men on the Moon' as well as several other books, including 'The Age of Radiance', 'The First Heroes', 'Thomas Paine' and 'Pearl Harbor: From Infamy to Greatness'.
The son of a former slave, Pertinax was the Roman Emperor who proved that no matter how lowly your birth, you could rise to the very top through hard work, grit and determination.This previously untold story brings a fascinating and important figure out of the shadows. A self made everyman, a man...