In 1943, after the capitulation of Italy, the territory of the Ankaran’s peninsula belonged to Germany under the then established operational area.

The German army mobilized all its inhabitants to build bunkers, firing nests and trenches because they expected allied forces to disembark during the Operation Overlord in the Gulf of Trieste. Visitors can discover preserved remains of a part of the defence line in the vineyards on cape Debeli rtič.