Possible Clues:

• Big guns knight invited into ranker’s function
• Directive almost involving Reagan trimmed down the big guns
• Arms injunction I ignored
• Shells, for instance
• Soldiers caper about new artillery
• Gets fired from The Arsenal
• Order one sent out for military supplies
• Soldiers caper, stealing knight's weapons
• Soldiers take steps to secure new weaponry
• Soldiers move joyfully, bringing in November's supplies