|Battle of Sector 21505|
|Part of Federation-Cardassian War|
The Battle of Sector 21505 was one of the decisive battles in the waning months of the Federation-Cardassian War. In the last ten years, the war became a war of attrition. Recent battles had ended in one stalemate after another. The Federation Council decided some kind of decisive victory needed to be achieved. A fleet, consisting of numerous Excelsior-class starships and light frigates, was sent to make a stand at Sector 21505.
Victory was made difficult by the use of unmanned dreadnaughts running kamikaze maneuvers at the Federation fleet's ship. Personnel aboard the USS Horatio Nelson learned that the dreadnaughts were being maintained by the Cardassian flagship. By erecting a scattering field, the Horatio Nelson was able to render the dreadnaughts powerless.