Military Operations on Urban Terrain   Military operations are conducted predominantly in urban areas. Special training facilities exist therefore to simulate tactical urban combat in cities, towns and villages. In the Netherlands, soldiers prepare for their operations in artificial villages like Oostdorp and Marnehuizen. Oostdorp is a small settlement of 36 houses. The names of the streets refer to Oosterbeek (near Arnhem) where in September 1944, heavy street fighting took place, during 'Operation Market Garden', between British and German troops. Marnehuizen is one of the largest military training facilities in Europe. The village has about 120 representations of suburban houses, apartment buildings, shops, a town hall and a railway station but also special designed ruins. Here, the names of the streets refer to the bombed streets of Rotterdam in the air raid of May 1940.