Jan Judocus Heemskerk died on 1944-02-25. Cause of his death: executed by German execution platoon. The Germans used the Waalsdorpervlakte (plain) in the dune area Meijendel in Wassenaar (near the Hague) during WWII as a fusillade. Resistance fighters held in a nearby prison, the so-called Orange hotel, were brought here and killed in this area. How many people exactly were executed during the war years is not known. The official record says that between 250 and 280, including especially many resistance fighters, were shot here. This information has mostly been supplied by the 'Stichting Oranjehotel' and the relatives or friends of the victims. Also by the society 'Erepeleton Waalsdorp' and the archive of the municipality of Wassenaar and has not been checked for historical correctness.