Lyudinovo () is a town and the administrative center of Lyudinovsky District in Kaluga Oblast, Russia, located on the shores of Lake Lompad formed by a dam on the Nepolot River, southwest of Kaluga, the administrative center of the oblast. As of the 2021 Census, its population was 35,874. History The village of Lyudinovo was first mentioned in 1626. At the beginning of 18th century a Russian industrialist from Ural, Evdokim Demidov, ordered two dams to be built on the Nepolot river. Two reservoirs were created: upper (Lyudinovskoye) and lower (Sukremlskoye). An iron foundry was built near the Sukremlskoye reservoir in 1738. Ironworks near Lyudinovsky reservoir were built in 1745. Nowadays Lyudinovsky Lokomotive Plant located there. Ivan Akimovich Mal’tsov bought the metallurgy works from the Demidov family, and his son, Sergei Mal'tsov was responsible for developing the area into a centre of industrial production. In 1841 the first Russian rails for Nikolaevskaya railway were produced here. In 1857-1858 these works produced vessels for Russian Black Sea Fleet and river vessels. First Russian steamers were built here in 1858. In 1866-1867 first Russian open hearth furnace were built in Lyudinovo ironworks. First Russian commercial steam locomotive was built here in 1879. The peak of the industrial boom was here in 1875-1885 when the government ordered a lot of locomotives and train carriages from the local factories. In 1890-1894 the first Russian locomobile factory was built. As a heavy industrialised area Lyudinovo joined the Communist Revolution in 1917. All industries vere nationalized in 1918. In 1922 locomotive plant to resume locomotive and locomobile production. In 1938 the workers settlement of Lyudinovo was granted a town status. World War II During World War II, Lyudinovo was under German occupation from October 4, 1941, to January 9, 1942, and again from January 17, 1942, to September 9, 1943. During the German operation Typhoon, the whole territory of Lyudinovo raion was occupied by 4 October 1941. However three months later it was briefly re-occupied by Soviet forces during the Moscow counteroffensive. On 17 January 1942, the Germans started a counterattack. They suddenly attacked the main column of 1088th Infantry Regiment on march by aviation and tanks. Soviet column was attacked directly on the road and the heavy snow didn't give the truck drivers any chance for maneuvering. Uncontrolled retreat began, most of the heavy weapons were lost. At the same time one of the bombs