Possible Clues:

• Perhaps a Japanese weapon on display, perhaps
• Japanese ruler finds a recipe for pork crackling?
• By the sound of it, display the weapon for the Japanese boss
• Japanese commander nearly fired weapon
• Army commander in feudal Japan
• Ancient Japanese commander
• Turn back in military order for C-in-C
• James Clavell best seller
• Commander's order to troops to stop retreat?
• Almost fired weapon as military commander