
Fighting alongside Jedi General Plo Koon, who was dispatched to coordinate the 442nd's siege, and his wingmate Captain Jag, the battalion secured a victory for the Republic.

In the year 19 BBY, they were deployed to the planet Cato Neimoidia in battle against the Separatist forces there. The 442nd Siege Battalion was created to serve the Grand Army of the Galactic Republic during the Clone Wars, against the secessionist Confederacy of Independent Systems. Proficient in besieging enemy fortifications, they were equipped with vehicles such as All Terrain Reconnaissance Transports and Infantry Support Platforms that also featured green-colored markings. Members of the 442nd sported phase II clone trooper armor, decorated with bright green markings, and were typically equipped with DC-15A blaster carbines. The 442nd Siege Battalion was an armor battalion of clone troopers in the Grand Army of the Republic, composed of four companies with 144 troopers in each.
