>>314850630No, it's actually the opposite. The military practically encourages special forces to grow beards and hair long.
It lets the enemy know they're dealing with some serious shit now. There's supposed to be a visual contrast between the two.
Plus they might need that hair to blend in with the surroundings and deal with locals, especially over in Afghanistan. You can always cut it off as needed, but you can't just grow it back on the spot.