Memorial Bombardement Alexanderkazerne 10 mei 1940 in The Hague

You're standing on the Oude Waalsdorperweg in The Hague, at a memorial that's easy to walk past. Look at the low concrete wall along the grounds. On one of its sections, about one and a half metres high, there's a text in relief. And on the ground in front of it lies a stone showing the floor plan of a barracks that no longer stands here.