The imaginary formations ranged in size from battalion to field army and were faked using documents, photographs, double agents, news reportage and physical subterfuge. Some of the units were either based on existing decommissioned formations (usually World War I formations) or created afresh. Many were used multiple times, Clarke in particular believed that reusing units in the long term would help establish their existence in the mind of the enemy.
Created for the planning of the invasion of Normandy the FUSAG later became redundant and was used to mislead Axis that the Allies intended a major invasion at Pas de Calais. Later utilised to threaten airborne landings in September 1944.
2nd US Army Group (SUSAG)
Originally intended to take the role of the FUSAG, but when the latter's job was taken over by the 12th Army Group the formation became redundant.
A subordinate of FUSAG, supposedly landed in Liverpool and stationed in Little Waltham, Essex. Moved from FUSAG to SHAEF later in the year; double agents reported to the Germans that it was largely US convicts.
Formed part of Operation Pastel Two, the planned deception for Operation Olympic, but never formally used. The final version of Operation Pastel incorporated notional airborne landings, using dummy parachutists in the interior of Kyūshū. XXXV Airborne Corps was designated as carrying out this task. Had Operation Pastel been carried out, the first elements of the Corps, quartering parties of the notional 18th Airborne Division, would have been depicted as reaching Okinawa on August 15, 1945. Following this glider pilots were to have been depicted as reaching Okinawa around August 20, 1945, followed by the troops of the real 11th and 18th Airborne Divisions, starting to arrive in Okinawa on September 1, 1945. On the same day the notional corps headquarters would have been activated.
This notional formation was 'built up' around real units, the 517th Regimental Combat Team, 1st Battalion, 551st Parachute Infantry Regiment & the 550th Airborne Infantry Battalion which were depicted as operating under a single command when in fact they were operating separately. Supposedly arrived in Sicily from the United States in May 1944. It was notionally attached to the Seventh United States Army and was to be dropped on the town of Paulhan in France to support a fictional invasion of the Narbonne region. It was disposed of by announcing in July 1944 that the division had been disbanded.