EN
In his contribution, the author follows the text of historian René Grégr published in the Vojenská história magazine in 1999. Specifically, he provides the reader with two redacted documents from the expertise on the potential use of a mini-submarine by the Hungarian Army on the Czechoslovak section of the Danube. The author of the report was the then commander of the Engineer Combat Regiment 6 in Bratislava, Colonel Josef Klicpera. The document was dated 21 February 1938.