The Third Fleet was a United Federation of Planets fleet on active duty in the 23rd and 24th centuries. Fleet Captain Thoraal Kazanga, an Andorian, was commander of the Third Fleet in 2275. (Orion Press: "The Blue Rose") In 2375, the Third Fleet was taken by surprise by the Breen when they assaulted their outer defense perimeter at Neptune. The Third Fleet fought for two hours to hold the Breen at bay but were unable to stop them from reaching Earth. The attack saw 139 starships destroyed. (The Dominion War Sourcebook: The Fires of Armageddon)