Men must follow my clear path (8)
I believe the answer is:
corridor
'path' is the definition.
(thesaurus)
'men must follow my clear' is the wordplay.
'men' becomes 'or' (military abbreviation for Other Ranks).
'must follow' is a charade indicator (letters next to each other).
'my' becomes 'cor' (both are expressions of surprise).
'clear' becomes 'rid' (synonyms).
'cor'+'rid'='corrid'
'or' put after 'corrid' is 'CORRIDOR'.
(Other definitions for corridor that I've seen before include "Long passageway" , "Passageway in building" , "Indoor passageway" , "Passage connecting rooms" , "Long narrow passage with doors into rooms" .)