 After the Second War of Schleswig in 1864, where Denmark lost Southern Jutland to Germany until 1920, Vamdrup became a border town, where the railway station had important function as a border railway station.Kolding Sydbaner, a railway company that existed from 1911 to 1948, also had a railway line to Vamdrup.In connection with the industrialisation in the 1950s and 1960s Vamdrup flourished again with many new companies.