Glimmer, Taxable and Big Drum were World War II deception operations. They were conducted as part of Operation Bodyguard, a broad strategic military deception intended to support the Allied invasion of German-occupied France in June 1944. Bodyguard was designed to confuse the Axis high command as to Allied intentions during the lead-up to the invasion. The London Controlling Section (LCS) had spent some time convincing German commanders that the fictional First United States Army Group (FUSAG) represented the bulk of the Allied invasion force. FUSAG's existence was fabricated through Operation Fortitude South.
