The Undaunted functioned as a gunship within the Republic Navy throughout the Clone Wars.
During the final year of the Clone Wars, specifically 19 BBY, the Undaunted was a gunship operating in the Cularin system when Order 66 was carried out. Alongside the Primal, a fellow Republic warship, it engaged Jedi starships as they attempted to escape the planet of Almas. However, while performing these actions, the Undaunted and the Primal found themselves attacked by the Maelstrom, another capital ship of the Republic. The Maelstrom was under the command of Jedi Master Darrus Jeht, who had avoided death during Order 66 by keeping his crew unaware of the order's existence, and he misled them into thinking that the Primal and the Undaunted had been seized by the Confederacy of Independent Systems.
Jeht achieved victory in the skirmish, resulting in the complete destruction of both the Primal and the Undaunted.