On & over Teredona I
The Battle of Teredona I took place on Teredona I when the Stargate was dialed and a sustained beam hit the base's shields. The Stargate then ceased firing and launched into orbit by adding extra components from the other side. The dialer was unknown at the time. Once in orbit, it raised it's own shield and attempted to fire on the base below. Lukily, Project Devlabordich managed to block it's fire until a Yulairian ship, the Victorious could assist. Fighters were launched from the Devlabordich and Victorious, but some were destroyed by an electrical cannon placed on the gate and the rest were forced to retreat.
The shield Victorious' was held for over a day before the Gate shut off due to the other side recognizing they could not penetrate the shields. The gate dropped to the planet and was destroyed. A new one was put into place.