The idea of a time loop, whereby someone is doomed to repeat an identical day of events time and time again, is not an original one. Perhaps most famously used in “Groundhog Day” (1993) it was first used in the film La Jetee (1962) and arguably in “Turn Back the Clock” (1933). In “Edge of Tomorrow” central Europe as been invaded by aliens and there is an all out war going on against them which has not been going well.