Possible Clues:

• Guard posted in hotel not powerful
• Guard dispatched before brief communist uprising
• Standing guard over base, left like Sondheim's clowns?
• Guard posted — Nile unstable
• Guard posted in by the Spanish
• Guard, head of security, unusually lenient
• Observer not entirely present in election
• Lookout dispatched message first to last
• Given mission to enter cell, avoiding outside guard
• Soldier on guard duty