Being a frontier province the Rhineland is strongly garrisoned, and the Rhine is guarded by the three strong fortresses of Cologne with Deutz, Coblenz with Ehrenbreitstein, and Wesel.
Its defensive works are extensive, and consist of strong modern forts crowning the hills encircling the town on the west, and of the citadel of Ehrenbreitstein on the opposite bank of the Rhine.
(of Isenburg); and it was partly to overawe the turbulent townsmen that successive archbishops built and strengthened the fortress of Ehrenbreitstein (q.v.) that dominates the city.
After Philip Christopher, elector of Trier, had surrendered Ehrenbreitstein to the French the town received an imperial garrison (1632), which was soon, however, expelled by the Swedes.