 An order of battle had to be drawn up for these units, crests and signs had to be created, and some form of physical presence was needed to convince enemy agents that the units existed.False radio traffic for enemy signals intelligence, and information gathered by civilian informers in Egypt, increased the Axis impression that these units were real and present in the theatre.Most of the civilian agents, however, were double agents controlled by 'A' force through a network called Cheese.