Underground organiser of Vietnam revolution recalled (7)
I believe the answer is:
overman
'underground organiser' is the definition.
I can't judge whether this defines the answer.
'of vietnam revolution recalled' is the wordplay.
'of' says the answer is hidden in the clue.
'recalled' is a reversal indicator.
'namrevo' is hidden in the letters of 'vietnam revolution'.
'namrevo' back-to-front is 'OVERMAN'.
Can you help me to learn more?
(Other definitions for overman that I've seen before include "Provide with too many crew" , "crew too much" , "Provide too many staff for" .)