Second in command, without feeling, wrote off (6,3)
I believe the answer is:
number two
'second in command' is the definition.
(I've seen this before)
'without feeling wrote off' is the wordplay.
'without feeling' becomes 'numb' (I've seen this before).
'off' is an anagram indicator.
'wrote' is an anagram of 'ertwo'.
'numb'+'ertwo'='NUMBER TWO'
(Other definitions for number two that I've seen before include "vice" , "Assistant" , "Second in command" , "Dump" , "Second-in-command" .)