In war: resolution; in defeat: defiance; in victory: magnanimity; in peace: good will. (Winston Churchill)

The third is probably the more difficult. To be magnanimous (having a courageous and generous spirit) after struggling to overcome a dangerous foe is not easy. Then, in times of peace, to show good will, especially to those who were recently your enemy, takes help from on high. 

Jesus, “But I tell you who hear me: Love your enemies, do good to those who hate you, bless those who curse you, pray for those who mistreat you” (Luke 6:27-28)