Together with an increasing centralisation of government in the Scandinavian countries, the old system of "leidang" — a fleet mobilisation system, where every "skipreide" (ship community) had to maintain one ship and a crew — was discontinued as a purely military institution, as the duty to build and man a ship soon was converted into a tax. The Norwegian leidang was called under Haakon Haakonson for his 1263 expedition to Scotland during the Scottish–Norwegian War, and the last recorded calling of it was in 1603. However, already by the 11th and 12th centuries, European fighting ships were built with raised platforms fore and aft, from which archers could shoot down into the relatively low longships. This led to the defeat of longship navies in most subsequent naval engagements—e.g., with the Hanseatic League.