Saint Pio had a very special relationship with the military and veterans of both World War I and World War II. Saint Pio himself and other three friars of his community were selected for military service.
At that time, Saint Pio was a teacher at the seminary and a spiritual director. On November 15, 1915, he was drafted into the Italian Army, and on December 6th he was assigned to the 10th Medical Corps in Naples.