Festung Königsberg between January and April 1945 - "Uns geht die Sonne nicht unter‪"‬

This dissertation strives to analyse the different causes as to why the city of Königsberg held out for over two months before it was finally captured by the Red Army, in order to answer the question what determined the successfulness of the city as a Festung. The conclusion will expand the analyses to the Festung-strategy as a whole and to other fortress cities in Eastern Germany.