Fives was recruited into the 501st Legion. Following the successful defense of Kamino, he joined the ranks of the elite Advanced Recon Commandos along with CT-1409 "Echo," the only other survivor of the attack on Rishi Station.

On his first assignment after graduating, Echo was tasked with guarding the Rishi Station moon base, where he, along with Fives, Clone Captain CT-7567 "Rex," Clone Commander CC-2224 "Cody," and Hevy, who sacrificed himself during the fight, aided in warning the Republic of an impending Separatist attack on Kamino. Echo was commended for his bravery and absorbed into the 501st Legion.

CT-5597, nicknamed "Jesse," was an Advanced Recon Commando and Clone Lieutenant who served in the 501st Legion during the Clone Wars. Like all clone troopers, he was bred from the genetic template of Jango Fett and trained to serve in the Grand Army of the Republic. Driven by a sense of patriotism, Jesse was a loyal soldier who fought hard to defeat the enemies of the Galactic Republic. He was proud of his service in the Republic Military, wearing the Republic crest as a facial tattoo and on the helmet of his clone trooper armor.

"Colt" was the nickname of a Clone ARC Commander who served as the commanding officer of Rancor Battalion, part of the Grand Army of the Republic, during the Clone Wars. He was killed by Asajj Ventress during the Battle of Kamino.

"Havoc" was the nickname of a Clone ARC Commander who served in the Grand Army of the Republic during the Clone Wars as a member of Rancor Battalion. He served as part of the Galactic Republic's military leadership during the Battle of Kamino, in which he perished.

"Blitz" was the nickname of a Clone ARC Commander in Rancor Battalion. He, along with fellow ARC Commander Colt and ARC Commander Havoc, oversaw clone trooper training during the Clone Wars.

Alpha, as was the case with the rest of the ARCs, first saw action with the Separatist invasion of Kamino. As the Confederacy's droid forces pushed towards the heart of Tipoca City, the Kaminoan Prime Minister, Lama Su, activated the ARCs and authorized their deployment to hot-spots across Kamino in a last-ditch effort to save the planet's precious cloning facilities.

ARC-77, known as "Fordo," was an Alpha-class Advanced Recon Commando captain in the Grand Army of the Republic. In 22 BBY, he was assigned to a task force led by the Jedi Knight General Obi-Wan Kenobi, to take the Confederate-held world of Muunilinst. Together with a group of clone troopers that would later come to be known as The Muunilinst 10.