Greek military power caught American rebel (9)
I believe the answer is:
spartacus
'rebel' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I don't see?
'greek military power caught american' is the wordplay.
'greek military power' becomes 'sparta' (I can't justify this - if you can you should believe this answer much more).
'caught' becomes 'c' (cricket abbreviation).
'american' becomes 'US' (abbreviation for United States).
'sparta'+'c'+'us'='SPARTACUS'
Can you help me to learn more?
(Other definitions for spartacus that I've seen before include "revolutionary leader" , "Rebel Roman slave" , "Thracian who led the 73 BC slave revolt against Rome" , "Roman slave who led an uprising against Roman legions" , "Famous gladiator who led revolt against Rome" .)