A clever if flighty pit droid programmed in piloting, WAC-47 served as part of the 91st Recon Corps, reporting to Clone Commander Neyo. He was drafted into service as part of D-Squad, a special missions group of droids assigned by the Jedi Council to recover a vital Separatist encryption module. WAC-47 did not always see photoreceptor-to-eye with the mission's commander, Colonel Meebur Gascon, who treated the loyal droids as property. WAC-47, who seemingly had a program glitch that was unable to properly register the colonel's rank as anything other than "corporal," insisted Gascon treat D-Squad with the respect they deserved.
Colonel Meebur Gascon at first did not have a very high opinion of WAC-47, especially the droid's predilection for backtalk.
Though WAC-47 thought himself better suited to lead D-Squad instead of Colonel Gascon, R2-D2 imagined himself a better commander.
WAC-47 worked closely with QT-KT, a fellow member of D-Squad who was an astromech droid specially modified with a powerful magnetic coil.
Another member of D-Squad was M5-BZ, a modified astromech droid with a hollowed out cranium that housed Colonel Gascon's command module.
The last member of D-Squad was U9-C4, an astromech modified with a powerful laser cutter needed to break into the comm vault of a Separatist dreadnought.
WAC-47 piloted a captured Separatist shuttle in order to approach the Separatist dreadnought that carried the mission objective.
An experimental piece of Separatist technology, this compact palm-sized encryption module created an unbreakable code that scrambled Separatist transmissions, preventing the Republic from intercepting vital intelligence.
WAC-47 served as part of Clone Commander Neyo's unit in the Clone Wars. The two wore the sigil of the Recon Corps on their domes.