During the era of the Clone Wars, a substantial force of battle droids, dispatched by the Confederacy of Independent Systems, was deployed to the Outer Rim world of Hissrich. This droid force comprised multiple regiments and was under the command of the droid mercenary AD-W4. General Grievous, the Supreme Commander of the Droid Army, had enlisted AD-W4 to supervise this mission. The unit's primary objective involved deploying its harvesters to gather the plant life of Hissrich, with the intention of extracting its energy for utilization. These droids fought against Jedi Master Mace Windu along with his team.