Hel Fortified Area
... that Hel Fortified Area was in 1939 the last place of Poland to surrender to the invading Wehrmacht, and during World War II it was used as a Kriegsmarine base?
... that <b id="mwEH0"><a href="./Hel_Fortified_Area" id="mwEH4" rel="mw:WikiLink" title="Hel Fortified Area">Hel Fortified Area</a></b> was in 1939 the last place of <a href="./Poland" id="mwEH8" rel="mw:WikiLink" title="Poland">Poland</a> to surrender to the invading Wehrmacht, and during <a href="./World_War_II" id="mwEIA" rel="mw:WikiLink" title="World War II">World War II</a> it was used as a <a href="./Kriegsmarine" id="mwEIE" rel="mw:WikiLink" title="Kriegsmarine">Kriegsmarine</a> base?