'Super soldiers': The quest for the ultimate human killing machine

'Super soldiers': The quest for the ultimate human killing machine - Science - News - The Independent: "The ancient Spartans believed that battlefield training began at birth. Those who failed the first round of selection, which took place at the ripe old age of 48 hours, were left at the foot of a mountain to die. The survivors would, in years to come, often wonder if these rejects were the lucky ones. Because to harden them up, putative Spartan warriors were subjected to a vigorous regime involving unending physical violence, severe cold, a lack of sleep and constant sexual abuse."