Complex sentence: The former NAS Bermuda was redubbed the NAS Annex, serving primarily as a dock area for US Naval shipping, until the closure of the US bases at the end of the Cold War, in 1995.
Split into simpler sentences: The former NAS Bermuda was redubbed the NAS Annex. It served primarily as a dock area for US Naval shipping, until the closure of all of the US bases at the end of the Cold War, in 1995.