Interesting to see it focused on England. As a kid, I was very used to seeing them in Northern Normandy as well as North of France. Moving to the Netherlands, I also saw them a lot in the fields, much further away from the see. It's only when I traveled to the North of Norway that I realized how gigantic of a front WW2 was, and the sheer amount of land to be protected.
Just like anthills being connected to each other across countries, pillboxes are a huge, cross-country remnant of our common history.
Just like anthills being connected to each other across countries, pillboxes are a huge, cross-country remnant of our common history.