“In peace the sons bury their fathers, but in war the fathers bury their sons.”
Quoted by Herodotus in The Histories, Book I http://books.google.com/books?id=QA4ZZ5gRpnkC&q="In+peace+the+sons+bury+their+fathers+but+in+war+the+fathers+bury+their+sons"&pg=PA45#v=onepage