Planned by the London Controlling Section, Ironside was communicated to the Germans via double agents between May and June 1944. Unlike other Bodyguard deceptions, the plan was put across entirely by double agents without support by physical deception. Agent Bronx took the lead with support from Tate, Rudloff and Garbo. Ironside's story included an initial two-division assault, using Overlord formations, staged out of the United Kingdom. This would then be followed up with six divisions sailing from the east coast of the United States. Historians disagree on the impact of Ironside on German plans. There is no indication that the operation was successful in convincing the Germans of imminent Allied plans to invade the Bay of Biscay. On the other hand, Allied planners attributed the delay of a panzer division moving to Normandy in part to the deception.