Coastal Artillery Division (Poland)
The Coastal Artillery Division (Polish: Dywizjon Artylerii Nadbrzeżnej) - a coastal artillery unit of the Polish Army in the Second Polish Republic stationed in the Hel Fortified Area. The division fought in defend Hel in 1939 during the Third Reich's invasion of Poland.
Source: Wikipedia — Coastal Artillery Division (Poland) (CC BY-SA 4.0)