You guys are being extremely disrespectful of the breadth of those soldiers heads. Sure, in a perfect world, where certain genetic traits could be either optimized or eradicated, the distance from the tip of the nose to the back of the head would be less than or equal to the distance from the front of the sternum to the crest of the butt cheek however not all these heroes were so fortunate. Since keeping their bodies pressed tight together is of the utmost import, the only option is to offset laterally.
Sorry these gentlemen are more concerned with protecting your freedom than they are about being genetically flawless. If it makes you feel any better, they recognize it's a problem and have been working on creating a master race for quite a while, but these things take time.