Ouvrage Kerfent is a lesser work (petit ouvrage) of the Maginot Line. Located in the Fortified Sector of Faulquemont, the ouvrage consists of three infantry blocks and an observation block, and is located between petits ouvrages Mottemberg and Bambesch, facing Germany. During the Battle of France, Kerfent was attacked by German forces, who captured the position from the rear after a short assault with artillery support. The combat blocks were heavily damaged. During the Cold War, limited repairs were made to allow the underground facilities to be occupied. Between 1958 and 1961 the site was used by the Royal Canadian Air Force as a microwave communications relay station. In the 1970s the ouvrage was sold to the commune of Zimming. The ouvrage is now flooded.