During the Clone Wars a Separatist blockade was established over the Separatist Alliance planet of Umbara to prevent the landing of Galactic Republic forces. During the initial phase of the Battle of Umbara, Republic Navy forces smashed a hole in the blockade's defenses and managed to land at least one Acclamator-class assault ship.
Later during the campaign, the blockade, now reinforced by Recusant-class Light Destroyers, Umbaran Support Ships and additional three Providence-class Dreadnoughts and ten Munificent-class star frigates, was charged with protecting a Separatist Supply Ship, which was later destroyed by a group of clones from the 501st Legion.
- Star Wars: The Clone Wars – "Darkness on Umbara" (First appearance) (In flashback(s))
- Star Wars: The Clone Wars – "Plan of Dissent"