Related Clues:

• Diplomatic etiquette or procedure
• Accepted behaviour of violent troop following officer
• Acceptable behaviour of dance troop and company by law
• Data from polyunsaturates full of carbon
• Trivia book fodder
• They can be hard to face
• Encyclopedia fodder
• Almanac data
• Journalist checks them
• Press release mad to back official rules
• Passenger on vacation books train up for convention
• Approved procedure
• "Alternative ___" (falsehoods)
• It's the custom for most of troops to reassemble in front of column
• Professional army officer keeping to correct procedure