In the inter-war period the states of the Eastern Baltic embarked upon numerous efforts at collective security. The Poles achieved the greatest coup, an alliance with France that provided for French intervention in the event of war. Unfortunately for all of the parties involved, the progress of...read more

DDIke's picture
Shared by DDIke
 HQ Batallón) November 02, 2014

A submarine pen (U-Boot-Bunker in German) is a bunker which is designed to protect submarines from air attack. The term is generally applied to submarine bases constructed during World War II, particularly in Germany and the occupied countries which were also known as U-boat pens (after the...read more

Subscribe to Großadmiral Karl Dönitz