Johan Christian Fabritius

Johan Christian Sergei Fabritius, born May 29, 1890 in Moscow, died November 2, 1946 in Helsinki, was a Finnish military lieutenant colonel. 
He received his military training mainly in St. Petersburg and served during the First World War in the Russian engineering troops and participated in several battles in East Prussia, the Carpathians and Galicia. In 1917 he came to Finland and became chief of police in Raumo. In 1918, he commanded the White Guard on Åland and was later battalion commander in Satakunta.
In 1919 he was head of the fortifications department of the Ministry of War and from 1935 to 1938 acting head of the general staff's fortification department. He planned a large part of the fortifications that were built on the eastern border, Ladoga and the coast of the Gulf of Finland during the interwar period. That is why he has been called "the father of the Mannerheim line".
Fabritius was politically active in the Finnish-Swedish National Socialist circles before and during World War II. After Finland's armistice with the Soviet Union , in January 1945 he made a trip with a submarine to Germany. After negotiations with Ernst Kaltenbrunner between 10 and 11 February, he flew back and parachuted February 21. After being captured by the Red State Police, he died under observation in hospital. 