On May 20 1521, French soldiers attacked Pamplona, Spain, the city that Ignatius and the Spanish were defending. During the battle, Ignatius was hit by a cannonball. Outnumbered, the Spanish were defeated.
Ignatius later returns to the Loyola Castle where he underwent many painful operations to fix his leg.
While he was recovering, Ignatius read two books, the Lives of the Saints and The Life of Christ. After reading these, he became interested in Christianity and wished to be a soldier of God.