So when they get pregnant at the last moment their training is wasted and a soldier is lost. And if they don't get pregnant with the right timing, they get fed

So when they get pregnant at the last moment their training is wasted and a soldier is lost. And if they don't get pregnant with the right timing, they get fed into a meat grinder at the front? It seems suboptimal. And if the survival of your culture depends on forcing women to breed on fear of death, better if it doesn't.