Soldier’s account holding nothing back (7)
I believe the answer is:
trooper
'soldier's' is the definition.
(trooper is a kind of soldier)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for trooper that I've seen before include "ship" , "Cavalry 21" , "Cavalryman" , "He swears" , "Private soldier" .)