We present only a selection of the military fortresses and watchtowers (see below for the complete list). Between Basel and Lake Constance stood a series of watchtowers that had a line of sight with each other. The towers can often be assigned to the reign of Valentinianus I, the years around 370 AD. They served as protection against Alemannic invasions.
Reconstruction of a watchtower in Germany, to the north of Wiesbaden (Kastell Zugmantel).
Photo: Wikimedia, Oliver Abels.
Late-antique military installations in northern Switzerland. Schwarz - Ammann - Deschler-Erb 2014, Abb. 1.
Late-antique military installations along the Rhine in Aargau. Schwarz - Ammann - Deschler-Erb 2014, Abb. 1.
