Robin Schäfer is a German military historian. His latest book Fritz and Tommy: Across the Barbed Wire is co-authored with Peter Doyle.
Paul Reed is a military historian and author specialising in the First and Second World Wars.
Dan sits down with James Holland to talk about Operation Argument in February 1944, the biggest air battle of World War Two.
The Nazis presented themselves as warriors against moral degeneracy. As Norman Ohler reveals, the entire Third Reich was permeated with drugs: cocaine, heroin, morphine and, most of all, methamphetamines, or crystal meth, used by everyone from factory workers to housewives, and crucial to troops'...
