You enter FCF as a Frontiersmen after completing Frontier Adventure camp. This allows you to become a mamber and attend all other FCF camps, but all testing for advancement takes place at Frontier Adventure camp.
You need to donwload the Workbook for the level you'd like to advance TO, which is Buckskin.
For Frontiersmen to advance to Buckskin, they need to have the Adventure Silver medal or E2 Award (men need Trained Leader training), turn in a completed advancement workbook and score enough points on their practical testing during the Frontier Adventure; so come prepared. They also need Company Trapper Trapper's Brigade hours.
Buckskin members typically attend Frontier Adventure camp two or more years before advancing to Wilderness. They too need to downoad the Wilderness Workbook and undergo testing to show their competency before being allowed to move onto the next level. They need Adventure Gold or E3 (men Advanced Training), and Bourgeois Trappers Brigade level to advance to Wilderness.
The final level of graduation is the Wilderness Vigil. Candidates need to be ready physically, mentally and spiritually for this challenge. Details of the adventure are kept secret and are only revealed to candidates as needed, but suffice to say candidates must have a complete outfit, all the necessary Frontiersmen gear and knowledge to survive a night without sleep in the wilderness.