Warner Bros. is moving ahead with plans for a time travel tale inspired by a 2011 Reddit thread. Variety brings word that Apollo 18 screenwriter Brian Miller will rewrite the original concept by James Erwin. His high concept plot simply asked, "What if a unit of U.S. Marines are transported back in time and forced to do battle with Roman legions?"

The trade notes that some changes to Erwin's original concept have already occurred and that the film's band of military heroes will now be comprised of a Special Forces team rather than Marines specifically.

Joby Harold, Adam Kolbrenner, Gianni Nunnari and Tory Tunnell are attached to produce with Robyn Meisinger executive producing.