Complex sentence: He fought in the Battle of the Bulge, where a severe case of frostbite nearly resulted in the amputation of his hands and feet; fortunately, he was able to beat the gangrene before that became necessary, and was awarded a Purple Heart.
Split into simpler sentences: He fought in the Battle of the Bulge, where a severe case of frostbite nearly resulted in the amputation of his hands and feet. Fortunately, he was able to beat the gangrene before that became necessary, and was awarded a Purple Heart.