The article deals with the philosophical and ethical implications of transhumanism and human enhancement techniques. It considers how enhancement and therapy are two different types of biomedical intervention. It then looks at the implementation of these ideas in the military sector. It analyses various standpoints and views on transhumanism, the benefits and risks of using newly acquired scientific knowledge to improve and alter naturally deficient human nature. The need for ethical reflection and argumentation is emphasized; new scientific discoveries can dramatically (...) change our experience of the world around us and may present a huge risk to mankind if left unchecked and not critically discussed. The article reflects on the dangers and risks of human enhancement and its possible consequences on the battlefield as well as the broader contexts and implications. The article also considers which criteria would be suitable to ensure beneficial and less controversial enhancements are carefully selected and to enable these to be distinguished from more dangerous practices that change the human body and/or mind. The aim is to consider and evaluate the possible benefits and risks of using enhancements for military purposes and to identify possible criteria for their justification and/or rejection. (shrink)