Possible Clues:

• Not taken by surprise
• Know there's fighting to the East?
• Informed about a Herts town
• Like a very good security guard
• No wing could make this sound for sale
• Fighting to the East for something for sale
• Is one alive to the fact that there's fighting in there?
• ___ of (knowing about)
• Knowing (of)
• One may know it's something for sale