Befestigung im Felde
Befestigung im Felde is a German military treatise on field fortification by Karl August von Struensee, published in 1771 by the David Siegert bookshop and held by the ETH-Bibliothek. Its engraved plates number and label fortification profiles, ditches, and parapets as plan and section drawings. A designer might take their clean technical linework, numbered callouts, and precise lettered diagrams as a model for schematic or instructional graphics.
