Herstal is a municipality of Belgium. It lies in the country's Walloon Region an Province of Liege along the Meuse river. Herstal is included in the "Greater Liège" agglomeration, which counts about 600,000 inhabitants. The Herstal municipality includes the former communes of Milmort, Vottem, and Liers (partly, the other part being incorporated into Juprelle). A large armaments factory, the Fabrique Nationale or FN, provides employment locally.