[Friedrich von Esmarch--surgeon, one career].

Friedrich von Esmarch was born in 1823 in Germany and he is one of the greatest surgeons of the Germany of that time. Fridrich von Esmarch introduced the Esmarch tourniquet, which enables operative field bloodless. This revolutionary innovation is still present in the orthopaedic surgery all around world, as well as for the first line hemostasis. Beside this, Esmarch also improves others fields of surgery: immobilizations, methods of antiseptic surgery, modified Esmarch mask for anesthesia. He joined few wars and had a rang surgeon-general. Although his experience was primary from the trauma, he also introduced the training courses of the First aid for the ordinary people, making medicine of that time more modern and efficient