Thanks to a lot of work by Alistair Graham Kerr, assisted by Charles Blackwood in respect of the images, we now have this updated version of the 1911 publication from Encyclopædia Britannica. An excellent summary and lots of good details. Well worth a quick read no matter how much one knows.
“I Inherited my fathers Library with a collection of Encyclopædia Britannica dated 1911, years earlier I had read through a number of articles including that on Fortifications and Siegecraft. Although somewhat outdated today, the historical value is still of interest. I had always wanted to make the article into a stand alone booklet.
With the help of Wikisource, I have been able to do that. My thanks goes to Charles Blackwood who has cleaned the original plans and diagrams straightening some that needed to be done. Charles has also provided a number of photographs from his archive collection to add emphases to some of the original diagrams. My thanks also goes to Wikipedia, Wikisource and Google Earth.
This publication©Fortress Study Group 2020”.