The US military’s future technology division is reportedly eyeing tampering with soldiers’ genes, allowing them to go for days without food or sleep and re-grow limbs lost in battle or due to landmines.
Scientists at the Pentagon's high-tech Defense Advanced Research Projects Agency hope to find a way to affect certain genes to make the human body do amazing things, like using body fat more efficiently, says British newspaper Sunday Express.

http://www.frworld..com/2012/08/universal-soldier-pentagon-eyes-limb.html