In one of the campaigns in the Middle East (Cyrenaica), reliable reports show that the
German tactics put great emphasis on the development of a defensive system best designed
to assure ground concealment.
It was found that German trenches were narrow, with no parados, and the spoil for the
parapet was well spread out and never more than 9 inches high. The effect was to
make the trenches inconspicuous, and it is stated that on one occasion an officer
walked to within 30 yards of an enemy post without seeing it.
There were no sandbags and few wire obstacles, and there was a general lack of construction
materials. This absence of materials, though it may have been enforced by circumstances,
proved entirely effective and made defenses very difficult to locate. Revetting was
usually dry-stone walling, but very few posts had overhead cover, protection from the
air being obtained rather by the narrowness of the trenches than by concealment. In
one area a number of tank turrets were used as pillboxes in fixed defenses and were
very effective, providing good protection and being easy to conceal.