S1 (Rhine-Ruhr S-Bahn) Services ran via Düsseldorf Airport Terminal station from 24 May 1998 to 28 May 2000. Services were extended from Düsseldorf to Solingen on 13 December 2009, replacing part of the former line S 7 service. S1 (Rhine-Ruhr S-Bahn) Line S1 is a S-Bahn line on the Rhine-Ruhr network. It is operated by DB Regio. It runs from Dortmund west over Essen to Duisburg. From there it travels south to Düsseldorf and Hilden before continuing to Solingen. It is operated at 20 minute intervals, using coupled sets of class 422 four-car electrical multiple units. Line S 1 runs over lines built
Battle of the Ruhr the RAF—in part to keep German defences dispersed, just as there had been raids on areas other than the Ruhr during the battle. The British bomber force consisted mainly of the twin-engined Vickers Wellington medium bomber and the four-engined "heavies", the Short Stirling, Handley Page Halifax and Avro Lancaster. The Wellington and Stirling were the two oldest designs and limited in the type or weight of bombs carried. The Stirling was also limited to a lower operational height. Bombers could carry a range of bombs—Medium Capacity bombs of about 50% explosive by weight, High Capacity "Blockbusters" that were mostly explosive,