It seems that if there are two topics that AFV aficionados (or as my wife calls them “tank nerds”) like to argue about, it’s gun penetration stats and comparative armor quality. Earlier today I was looking through Tactical and Technical trends, nos. 1-20. I found this reference to a British test of Allied tank guns versus the armor of a Panzer III. Despite the fact that the penetration values of the guns in this report are well known, as are the armor values of the Panzer III, I figured this might still be of interest to people.