History of Strasbourg remained neutral during the Thirty Years' War (1618-1648), and retained its status as a Free Imperial City. However, the city was later annexed by Louis XIV of France to extend the borders of his kingdom. Louis' advisors believed that, as long as Strasbourg remained independent, it would endanger the King's newly annexed territories in Alsace, and, that to defend these large rural lands effectively, a garrison had to be placed in towns such as Strasbourg. Indeed, the bridge over the Rhine at Strasbourg had been used repeatedly by Imperial (Holy Roman Empire) forces, and three times during the Franco-Dutch War
European institutions in Strasbourg as the seat of diverse information relays of the European Union, such as the Information Centre on European Institutions (CIIE), the Euro-Info Centre (EIC), the MEDIA Antenna and the European Documentation Centre (EDC) as well as the European Job Mobility Portal, the EURES network. The city also hosted the automated computerised network Schengen Information System and currently hosts the central unit of its new version, the Schengen Information System II, a back-up unit being located in Austria. Other bodies based in the city, most of them unrelated either to the Council of Europe or the European Union but working in