The fear of the Germans figuring out where Operation Overlord was going to be was huge. Thousands of lives were at stake for the location and date to be kept secret. Therefore a plan of misleading the Germans as to where and when the invasion would take place was put forth. The Allies placed dummy landing crafts in Thames estuary and along the eastern coat. Hundreds of dummy tanks were deliberately placed where German air reconnaissance would photograph them. Deserted tent encampments were setup in East Anglia. A fake radio network was setup to simulate the traffic of an army preparing to invade. The pattern of air bombardment was arranged to indicate Pas de Calais in France was where the invasion would happen. The efforts were very successful and lead the Germans to keep their main forces in Pas de Calais even after the day of Operation Overlord had passed.