Military Security in the Baltic Sea during Cold War: Analysis Based on the Materials of the Naval Reconnaissance Unit of the Polish People’s Republic

The purpose of the article was to present, in the proverbial nutshell, the issues related to the military situation in the 1950s and 1960s during the so-called Cold War in the Baltic Sea, based on the materials of the Naval Reconnaissance Unit of the Polish People’s Republic. These materials were very important for analytical teams preparing concepts for operations in the Northern European Theater of Operations, as well as ensuring the security of the maritime borders of the Warsaw Pact countries. The 1950s and 1960s were characterized by a wide range of reconnaissance activities as a consequence of the changing reality in the Baltic Sea. The naval potential of both NATO countries, especially Denmark and the Federal Republic of Germany (FRG), was expanded, thus the other side began to create the People’s Navy of the German Democratic Republic (GDR), as well as to strengthen the combat potential of the naval forces of the People’s Republic of Poland. At the same time, the cooperation of allied fleets of the Warsaw Pact countries was improved, and for this purpose, staff exercises were conducted on maps and in the Baltic Sea. In retrospect, both NATO and the Warsaw Pact appreciated the military importance of the Danish Straits and the Baltic Sea. In the following years, efforts were made to improve the concepts of naval forces in these waters