Finding out this lesson, World War I troopers would deploy barbed wire in so-called concertinas that were somewhat loose. Barbed wire concertinas can be well prepared during the trenches then deployed in no-man's-land reasonably quickly beneath cover of darkness. Concertina wire, also called coiled wire or concertina fencing, is actually https://www.qunkunmetal.com/fencing/concertina-razor-wire.html