Chris McNab is a prolific Pitkin author and editor who specialises in military history and military technology publishing over 40 books on these subjects. His Pitkin titles include Britain's Secret War 1939-1945 The Somme and Tommy First World War Soldier.Chris McNab is a prolific Pitkin author and editor who specialises in military history and military technology publishing over 40 books on these subjects. His Pitkin titles include Britain's Secret War 1939-1945 The Somme and Tommy First World War Soldier.