A surprise Rebel attack of an Imperial military ordnance center on Onderon occurred in 2 ABY.
The Alliance High Command decided to attack the Imperial Army-Navy Ordnance Center of Onderon which was the most important in the sector.
Early in the morning of Kagstag, Onderon underground members sabotaged the Imperial sensor nets for 12 minutes, long enough for a Rebel strikeforce to slip into the system undetected.
Twenty minutes later, Onderon underground forces attacked and destroyed the planetary shields protecting the region of Iziz.
Within minutes, starfighters of Shandor Squadron struck Jyrenne Base near Iziz, the site of the ordnance center. A second attack pass including all the Rebel forces allowed to destroy 67 percent of the ordnance in the base.
This battle was a great success for the Rebel Alliance, largely thanks to the heroic efforts of the Onderon Resistance. The destruction of the ordnance center crippled Imperial abilities to resupply its forces in the region.
- The Essential Atlas