Marching colonel takes one shot too many (5)
I believe the answer is:
bogey
'marching colonel' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for bogey that I've seen before include "Two over par for a hole" , "Evil spirit - golf score of one over par for a hole" , "One over in 20 across" .)