This report from the Pentagon which indicates that bearded men make better soldiers should come as no surprise to anyone. Beards, after all, are a natural part of the physiology of men. I have long regarded shaving as both a futile and an unnatural act, and I have thus been bearded for the vast majority of my adult life.
I highly recommend that all men grow beards. Beards are an essential part of what we are. Their presence makes men complete. And men who are complete are better suited for optimally fulfilling their proper functions in the natural world in which we live.