What is the theme in Code Talker: A Novel About the Navajo Marines of World War Two by Joseph Bruchac?

History is another theme in the book. This novel takes place during World War II. Ned, the hero of the novel, is a Code Talker who uses the Navajo language to move information during battle. The author of this book uses his fictional character to tell a true story of the Navajo during World War II.