Clone commandos (CC), also known as Republic commandos while serving under the Galactic Republic, were elite clone troopers that served in the Grand Army of the Republic‘s Special Operations Brigade during the Clone Wars. A result of the Kaminoans‘ genetic experimentation with the Jango Fett template, they were special forces soldiers noted for their training and elite status in the clone army. In 22 BBY, Clone Commander CT-411 «Ponds» gave command over five commando units to Jedi Master Mace Windu, who directed them to engage in a frontal assault against the Separatist Droid Army during the First Battle of Geonosis.

As the conflict between the Republic and Confederacy of Independent Systems swept across the galaxy, the commandos were organized into squads that supported the Republic war effort as an elite group within the Grand Army. One such team was Delta Squad; following the battle on Devaron, they reported directly to the High Council of the Jedi Order, informing them that no survivors were found at the massacre site. Foxtrot Group consisted of commandos led by Clone Captain CC-5576-39 «Gregor.» They served with the 212th Attack Battalion until the Battle of Sarrish, where they were declared «missing in action.»

In the latter days of the war, Clone Force 99 «Bad Batch» participated in the Battle of Anaxes, fighting alongside Jedi General Anakin Skywalker and the 501st Legion. Unlike the other clones, who were genetically identical with each other as well as their template, the Bad Batch commandos possessed various characteristics that set them apart from the rest of the clone army and even each other. Notably, Clone Force 99 used the prefix «CT-99» compared to other Clone Commandos, who had the prefix «CC».