Possible Clues:

• Sounds as if he's at the core of the corps
• Head of the corps in the core, by the sound of it
• Rank enough to be at the heart of things, by the sound of it
• Officer taking care of money an individual left
• K.F.C. founder, with 'the'
• Pass giving entry to single officer
• Monocular lord keeps one psychological novelist
• Pass around unattended army officer
• Officer awards pass to ace trainee
• Sounds as if the inside of the nut has got rank