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Barbed wire - Wikipedia ... Barbed wire
Wire obstacle. In the military science of fortification, wire obstacles are defensive obstacles made from barbed wire, barbed tape or concertina wire. They are designed to disrupt, delay and generally slow down an attacking enemy. During the time that the attackers are slowed by the wire obstacle (or possibly deliberately channelled into ...
The barbed wire strands on the top of the signal fence activated an alarm when pulled or cut, alerting the border guards. The signal or "hinterland" fence (Signalzaun) was the first of the border fences, dividing the Sperrzone from the more heavily guarded protective strip (Schutzstreifen) adjoining the actual border.
It is a natural building technique developed from historic military bunker construction techniques and temporary flood-control dike building methods. The technique requires very basic construction materials: sturdy sacks filled with organic material usually available on site. Standard earthbag fill material has internal stability.
Concertina wire - Wikipedia ... Concertina wire
The Joseph F. Glidden House is located in the United States in the DeKalb County, Illinois city of DeKalb. It was the home to the famed inventor of barbed wire Joseph Glidden. The barn, still located on the property near several commercial buildings, is said to be where Glidden perfected his improved version of barbed wire which would ...
Medieval fortification refers to medieval military methods that cover the development of fortification construction and use in Europe, roughly from the fall of the Western Roman Empire to the Renaissance. During this millennium, fortifications changed warfare, and in turn were modified to suit new tactics, weapons and siege techniques.
Dragon's teeth (fortification)