some of the smartest fuckers Ive met in this life were grunts - and all of us volunteered for it even though we all had the latitude to select whatever job we wanted. That said, ive met some of he dumbest motherfuckers in the infantry as well, it really is a mixed bag. in my experience however, at least as it comes to operations above leg-infantry (i cant speak to leg-infantry makeups), and at least 20 years ago, it was majority White. drivers, cooks and personnel admins were majority black. you're more apt to find coloreds in soft-skill jobs as opposed to anything else and I dont think thats entirely based on laziness as it is whats available due to ASVAB scores - most likely a bit of both. Around 2003, recruitment was hitting abysmal numbers and at least the Army was starting a waiver program for all cat-IV soldiers that were previously non-starters (felons, obese, etc) and it's just gotten worse over time. im more curious as to how this may affect genva conventions if an IQ is below a certain threshold and they're getting 'help' to get in, notwithstanding any waivers.