Matthiae Dögens heutiges Tages übliche Kriges Bau-kunst : mit vilen ausserläsenen, so wol alten als neuen Geschichten bewähret und mit den vornämsten Fästungen der Christenheit lehr-bilds-weise aussgezieret
Matthias Doegen's 1648 treatise on contemporary fortification, printed by Ludwig Elzevier and written in German for military engineers and officers, shows plans of star-shaped bastioned forts and their layouts. The plates are plain engraved line drawings of ground plans, with lettered bastions, moats, and angled walls, offering a designer clear geometric diagrams of star forms, radiating lines, and layered outlines.
