Federation Alliance
The Federation Alliance was the accord between the United Federation of Planets, the Klingon Empire, and the Romulan Star Empire to combat the Dominion during the Dominion War. 

The first offensive undertaken by all the members of the Alliance was the First Battle of Chin'toka in 2374. The Cardassian Liberation Front bolstered the Alliance to help win the Battle of Cardassia and, ultimately, the war in 2375. ()

After the Dominion War ended, in 2379, two members of the Alliance fought against the Remans at the battle in the Bassen Rift. ()

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bg:Алианс на Федерацията
de:Föderationsallianz
ja:連邦連合軍
nl:Federatie alliantie
Intergovernmental organizations
Treaties
Federation
Qo'noS
Romulus