I found an interesting "scan" of a report from the 1960s about the protection steel plates provide against artillery shells. It can be found here: http://tanks.mod16.org/2014/03/10/report-on-protection-from-fragments-from-he-ammunition/ Offers more... er.... ammunition on the debate on artillery's effectiveness against armored vehicles. Also I believe @TheForwardObserver has posted the following article here before: ("Who Says Dumb Artillery Shells Can't Kill Armor?" http://i