The Cybe theater was the seventh theater of war during the Clone Wars. Taking place during the Outer Rim Sieges, Archduke Daljeii Merr led the Vianden Exchange Association into a campaign for the Cybe sector. Having politically seized Ciera Major a couple years back, Merr sought to complete his conquest with the seizure of Cybe and its remaining colonies.
The campaign opened with the invasion of Lyak late into 19 BBY, mere weeks before Order 66. Lyak, as a remote outpost monitored by a garrison of clone troopers, was rapidly overrun by Separatist forces. Bekka, another outward colony was quick to fall as well and was followed by the battle of Cybe, which led to the destruction of the separatist campaign.
The Cybe theater came to an end with the rather short liberation of Lyak, closing the theater and securing the Outland Expansion Subsector for the rest of the war.