"Third generation battle droid" served as a categorization for specific battle droids, notably the Phase-III Dark Troopers developed by the Imperial Department of Military Research. Despite the shortcomings exhibited by the Separatist Droid Army, especially the constraints of the B1-series battle droid, during the Clone Wars which caused later galactic entities to avoid constructing entire armies composed only of battle droids, the third-generation Dark Trooper proved to be remarkably efficient and was engineered as a droid when it was recognized that the dependence on human pilots was the ultimate impediment to the Dark trooper program.