Alexandra Churchill is an author, researcher and historian who has contributed to and appeared on numerous television documentaries, including Timewatch (BBC2), Fighting the Red Baron (Channel 4) and Titanic with Len Goodman (BBC1). Her first book, Blood and Thunder: The Boys of Eton College and the First World War, was published in 2014. Her second book was Over Land and Sea: Chelsea FC in the Great War (2015) and her latest book was ' Passchendaele: 103 Days In Hell '.
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'.