Following the assassination of Graydon Creed, Bastion is given permission to hunt down mutants using his newly created Prime-Sentinels who were in essence part human, part robot. A cross-over epic featuring X-Men, Uncanny X-Men, Cable, Generation X, X-Force, and Wolverine.
I feel that the X-Force and Cable issues can be grouped together without having to mix them with the other issues. Uncanny X-Men 346 provides a brief interlude to the storyline. The X-Men and Wolverine issues alternate with each other until the epilogue issue in Wolverine 118. The Generation X issues 29-31 don’t really need to be included, but I’ve included these here to bump up the volume size to 20 issues.
Generation X 27
Uncanny X-Men 346
Generation X 29
Generation X 30-31