This should be an easy puzzle to solve.
- All you need to do is discover the names of these 5 Famous Colonels
- Then note the specified letter
- The letters should spell the name of the 6th famous Colonel
- Enter this 5 letter Colonel's name into the checker
- Get the final coordinates
- Find the geocache
Colonel 1

Last letter of his 4 letter First Name
Colonel 2

4th letter of his 6 letter Surname
Colonel 3

5th letter of his 6 letter Surname
Colonel 4

3rd letter of his 7 letter Surname
Colonel 5

Last letter of his 4 letter First Name
Now put the 5 letters together to form this famous Colonel's Surname and enter it into the checker.
Good luck

If you enjoyed, please write a nice log instead of just a TFTC
Hunter
Congratulations to n0w0rries for the FTF