German Barbed Wire & poles

Wandering around in a piece of land of my family, just outside Heraklion, I noticed some metallic objects in the fence that were now similar to those already existing. They were not only seemingly older, yet as the wire fences of civilian property use straight poles from iron, these poles were looking much more different. By making some thorough reserch on the net I found at last what these poles were. They were to be used for barbed wire fencing, from the Germans.

My grandmother rembers the Germans making similar fences.

Also in the area I found barbed wire very very different from the one that we use now. Thicker and larger thorns, that do not allow the human hand to grab the wire without being torn...