After the town was damaged in the , Revolutionary French administrators grouped it together with the nearby town of Crefeld. The fates of the two would be ever-closer interlinked from industrialization onwards. In 1929, under the influence of the Prussian minister of the interior, Uerdingen and Krefeld united in a special municipal government giving each urbanity equal rights. The new conglomeration was known as "Krefeld-Uerdingen am Rhein." In April 1940, the Nazi regime eradicated the condominium, and renamed the city plain "Krefeld." The unification was not reverted following the war, to the annoyance of the Uerdingene. Nonetheless, Uerdingen, as a part of the city of Krefeld, retained an unusual special status within Germany. One sign of this can still be seen today in Krefeld's city coat of arms (""Wappen""), which still has the Uerdinger arms in its right half. These last remnants of the medieval period were finally eliminated in the North Rhine-Westphalian reapportionment of 1975.