3. A Deception Factory
Juan Pujol Garcia and his fictional sub-agents sent German intelligence a flood of reports from Britain. That transformed him, in German eyes, into their most successful spy. The moment for cashing in on that trust came during the buildup to D-Day and the subsequent Normandy campaign. The ultimate aim of the painstakingly crafted deception was to convince the Germans that the Normandy landings were just the first in a series of planned invasions. Allied intelligence wanted the Germans to believe that an even greater invasion was planned against the Pas de Calais.
On the eve of D-Day, British intelligence set out to cement Pujol’s credibility with the Germans. They had him send his German handlers a message alerting them to the invasion, a few hours before it began. It was a calculated risk: British intelligence reasoned that, by the time Pujol’s warning worked its way from German intelligence to commanders in the field, the invasion would have already taken place. Thus, the warning would do the enemy no good, and simultaneously enhance Pujol’s credibility with the Germans.