A fairly large fragment of Horst Slesina’s book, translated from German by Dmitry Lyutik, has already appeared in RuNet. Comparing it with the material that was published in the Forteza magazine, however, indicates that the translator treated the text of the original source quite freely, omitting significant parts of it without any comment. Therefore, we considered it appropriate to post here a translation of the Polish publication of a fragment of Horst Slesina’s book, especially since it is accompanied by comments from the famous Polish fortification researcher Zbigniew of Prussia. Abbreviations in the author’s text of the book are indicated in italics.