John Norris is a freelance military historian who writes regular monthly columns for several specialist titles, ranging from vehicle profiles to re-enactment events. He has written well over a dozen books on various military historical subjects, inlcuding Fix Bayonets! (2014); Mortars of WWII (2015); World War Two Vehicle Art (2016) and Logistics in WWII (2020); all published by Pen & Sword.