Purpose and Mission
The COD is not an honor society so much as it is a unit-based co-educational Service organization. To be a member, one must simply be willing to commit to doing service, and ask to join the Corps of Discovery. The COD takes its name and symbolism from Lewis and Clark's historic Voyage of Discovery.
Chris Hagerty has put together the second edition of the Corps of Discovery Guidebook which you can download as a PDF file; COD Guidebook 2nd edition (posted 9/12/16).
A link that came to my attention is a short talk about the original Corps of Discovery trek. I thought others would have some interest www.history.com/topics/lewis-and-clark