In an alternate timeline, the Battle of Procyon V, fought in the 26th century over Procyon V, was the final battle in the invasion of the Sphere Builders, in which the transdimensional aliens' encroachment into the Milky Way Galaxy was turned back by the forces of the Federation, led by the USS Enterprise-J. The USS Phoenix (NCC-65420-X) took part in this battle as well. (Star Trek: Phoenix-X: "Temporal Doom! Part II")