Battle of Andoria

The Battle of Andoria was an engagement between forces of the Andorian Empire and United Earth fighting forces of the Romulan Star Empire.

Background
Seeking to make the war go faster Praetor D'deridex orders Admiral Valdore to move on the homeworlds of the Humans, Tellarite, and Andorians. To comply with these orders Valdore launches an undermanned attack against Andoria. 

The Battle
As the Romulans entered the Andorian system the warp detection grid was set off, causing the IGS along with the USS Yorktown (NCC-108) and Challenger to respond to the threat. As they moved to intercept the Coalition fleet detected 14 smaller fighters moving on Andoria and one large mother ship maintaining position outside the system. The two Earth ships moved to stop the mother ship while the Weytahn went to stop the fighters which were destroying the warp detection grid's nodes. As the Earth vessels approached the Romulan vessel set a course for Andoria at maximum warp, blowing past the two Earth vessels, which immediately turned to pursue the ships.

At the same time the Weytahn and its fighters moved to attack the Romulan warship. However, the Romulans captured the fighters and turned them on the Weytahn forcing it to destroy its own fighter craft. Despite the craft being destroyed the Weytahn was heavily damaged and couldn't pursue the mothership, forcing the Challenger to pursue her alone. Once Challenger caught up to the vessel, it attempted to engage it but it was already captured by the Romulans. This forced the Challenger's captain to destroy his ship, taking out the Romulan mothership in the process. 

Aftermath
The destruction of Challenger caused disruption in Andoria's atmosphere resulting in ion storms and the Romulans were unable to capture their biggest prize yet.