In 1917, Sixtus along with his brother, Xavier and French Intelligence captain, Indiana Jones, went to Austria to convince his brother-in-law, Emperor Karl I, to agree to a separate peace with Britain and France.
- The Young Indiana Jones Chronicles – "Austria, March 1917" → Adventures in the Secret Service
- The Secret Peace
- The Secret Treaty
Notes and references Edit
Community content is available under CC-BY-SA unless otherwise noted.