From 1926/27, some villagers, mainly young men, flirted with National Socialism. About 1929, there was already a local Nazi cell in Jettenbach, allied to the local group ("Ortsgruppe") in Kollweiler, founded in 1928. In 1933, when Adolf Hitler seized power, the Nazis gained control of every seat on the municipal council. The Nazis provided make-work projects benefiting the jobless. The Jettenbach – the village's namesake brook – was straightened and lined with bricks, and a "bathing pond" was built. Gradually orders grew for the local quarry belonging to neighbouring Eßweiler. Eventually it employed over 600 workers.