I panic after fear grips heart of city -- boy finally volunteers (11,4)
I believe the answer is:
territorial army
'volunteers' is the definition.
(I've seen this before)
'i panic after fear grips heart of city boy finally' is the wordplay.
I cannot quite see how this works, but
'i' could be 'a' and 'a' is found within the answer.
'of' could be 'o' and 'o' is found within the answer.
'city' could be 'la' (Los Angeles) and 'la' is present in the answer.
'boy' could be 'terri' and 'terri' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for territorial army that I've seen before include "Soldiers" , "volunteers" .)