Space Marines
Space Marines are the most powerful and dreaded of all the human warriors in Warhammer 40,000. They are not Human at all but superhuman, having been made superior, in all respects, to a normal man by a harsh regime of genetic modification, psycho-conditioning and rigorous training. Being few in number compared to the uncounted billions of Humanity, Space Marines are organised into small independent armies called Chapters. Each Chapter is responsible for its own recruitment, training, equipment, organisation and strategy. Their unswerving loyalty is to the Emperor of Mankind and no other.