Possible Clues:

• Nincompoop
• ASAP he admitted smuggling: what an idiot!
• One who's not shocked left out idiot
• Fool to undermine senior teacher
• Bit of a dope
• A quiet male detained by pathetic fool
• Mine manager a fool
• Clod in part of trench?
• One stupid enough to exhaust top teacher
• Fool in part of trench nearest enemy