The Separatist Droid Army, also referred to as the CIS droid army, Separatist army, droid army or as the droid armies, was the ground army force of the Confederacy of Independent Systems during the Clone Wars, and was part of the Confederacy military. The Army was mostly built by Baktoid Combat Automata and led by the Kaleesh cyborg General Grievous. According to Count Dooku, Head of State of the Confederacy, the Droid Army, at the start of the conflict in 22 BBY, outnumbered the Republic’s Clone Army one hundred to one. In addition to this initial amount of droids, the Separatists continued to produce droids throughout the war, one example being in 21 BBY when they ordered more than three million battle droids with the financial backing of the InterGalactic Banking Clan.

The bulk of the Army was deactivated after the Clone Wars, when Darth Sidious rose to power as Emperor of the Galactic Empire. However, various members of the droid army remained active, including the super tactical droid General Kalani and his group of battle droids. These smalls groups of remaining battle droids and Separatist individuals were mostly hunted by the Galactic Empire in its early years. Most of these holdouts refused to attack back, though, still believing their enemies to be not the Empire but the Galactic Republic, unaware that the war had ended with the Republic transitioning into the Empire.