National Socialists’ seizure of power was celebrated in Müllenbach with a torchlight parade through the village. Not long thereafter, shoppers were being harassed and blocked from entering the Mayer butcher shop at Dorfstraße 116 in Müllenbach – a Jewish-owned business. The harassers were Brownshirts, at first ones from outside the village, but later also local ones. The mayor in Nazi times was Josef Steffes-Ollig. Nazi youth groups were also formed in Müllenbach in 1934. In 1936, Emanuel and Moses Mayer's butchering business was shut down by the Nazis. Brownshirts broke windows at their houses and shouted taunts. With Hitler's Invasion of Poland on 1 September 1939, the Second World War began. The need to guard Germany's nearby western border saw to it that there were many troops in the village, usually about 500 to 600, but at times as many as 1,000 to 1,200. On 9 May 1940 came the marching orders as Hitler pursued the Battle of France, which began the next day. On 30 April 1942, Müllenbach's Jewish inhabitants (Emanuel, Johanna and Julius Mayer and a foster-child named Heinrich) were deported to a death camp in Poland. Emanuel's and Johanna's names appear in a list of the dead from the Izbica ghetto. In 1942, there was a new parish priest, Alois Fuchs, born in Hüttigweiler (an outlying centre of Illingen); he served only 10 months before being replaced later the same year by Theodor Gilen, born in Ehlenz. He served until 1958. On 6 March 1945, American forces overran Laubach, and after an ill-advised attempt by a lieutenant and a small group of soldiers to hold the Americans back, resulting in three of the group being killed, the Americans also came into Müllenbach, whose inhabitants put up no fight. After the Second World War Müllenbach's first post-Nazi mayor was Johann Konz. On 1 October 1945, the local school opened its doors once again to schoolchildren, rather than to soldiers as it had had to later in the war. In 1946, Phillip Lanser succeeded Johann Konz as mayor. That same year, a census yielded a figure of 226 households in Müllenbach with 746 inhabitants. This year also saw Müllenbach become part of the then newly founded state of Rhineland-Palatinate. In 1948, Franz Gilles was the mayor and his deputy was Johann Konz. Gilles died the next year and was succeeded by Johann Klotz; Johann Konz continued to be the