Barbed Wire
Reviel Netz, 20 July 2000
“... or deter an advancing enemy, but as their ability to sustain themselves in the open increased, field fortification became more important than walls and castles. Whatever space a mobile army occupied in the 19th century was turned into a temporarily fortified area by means of trenches and other obstacles. In 1862, A.T. Mahan listed the principal kinds of ... ”