“Battalion” (** out of four) was a standard-issue action melodrama made right off the assembly line about a group of newly recruited U.S. marines (Jesse Richardson, Ellen Williams, Michael Thomson) who are sent to the front lines of an escalating battle in the South Pacific with otherworldy and bloodthirsty aliens. Yet another rip-off of “28 Days Later” and “Alien” but doesn’t have the style or originality of either; a few decent action scenes and performances but that’s about it.