The Soldiers of Halla is the tenth and final book in the Pendragon Adventure series by D. J. MacHale.

The title was revealed by D. J. MacHale on December 9, 2008, and was taken from a closing line in the preceding book, Raven Rise.

The Soldiers of Halla begins with the eleven Travelers, meeting in a crumbling wasteland of a city.

Bobby and Loor are trapped in a pit and watch as a colony of people are caught by the helicopters in a nearby building.

They confess that they know all that has transpired in Halla so far, including Bobby's murder of Alexander Naymeer on Second Earth.

Bobby travels to several worlds, including Third Earth, where Mark had been sent, and is leading a group of other exiles and rebels of Ravinia.

Saint Dane finds out that Nevva betrayed him, and kills her, not allowing her spirit to return to Solara.