This chapter intends to introduce the quality of magnanimous valor that Frigate Captain Arturo Prat (1848-1879) developed in the course of his life, which later allowed him to display his nobleness, greatness and glory when he died in the Battle of Iquique on May 21st, 1879 during the war between Chile, Peru and Bolivia (1879-1883). This chapter will offer a brief account of his life, and proposes the current need to know, highlight and follow authentic service leaders such as Prat. It delves into the conceptualization of magnanimous valor as a significant quality for extreme situations and emphasizes how this quality served Prat's life as a leader. Practical suggestions for military leaders are provided based on the model of Arturo Prat. Finally, a description of the Battle of Iquique where the hero's final moments can be observed is presented.