Close-up of fence and two bases from the Hornbeam line : Note the coils of concertina wire on the right waiting to be incorportated into the Hornbeam Line. The picquets are joined by two strands of barbed wire to which the concertinas are attached. Note coils of wire in the foreground and the defensive position with an excellent view down into the wadi and beyond. What they could not reach with an SLR or machine gun could be reached by the artillery. The Hornbeam Line and the approaches to it could be dominated.