The Legacy of the Aldenata, also known as the Posleen War Series is the fictional universe of one of John Ringo's military science fiction series. The central premise is that in 2006, humanity receives greetings from a highly advanced, peaceable Galactic Federation. However, all is not well, for a species of aggressive aliens known as the Posleen are attacking the Galactics. Since the Galactics are almost entirely unable to fight, they are appealing to the proven military abilities of humanity for aid.