Do a recce, there’s a good chap (5)
I believe the answer is:
scout
'do' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for scout that I've seen before include "Soldier on a reconnaissance mission" , "Person sent out to gain information" , "Information-gathering soldier" , "Explorer, spy" , "Member of organisation for boys" .)