Concertina wire or Dann...
Concertina wire or Dannert Wire is a type of barbed wire or razor wire hat is formed in large coils which can be expanded like a concertina. In conjunction with plain barbed wire and steel pickets, it is used to form military wire obstacles. During World War I soldiers manufactured concertina wire themselves, using ordinary barbed wire. Today, it is factory-made.                                                                                                                       ...more
The old version