Possible Clues:

• Great guns or artillery
• Decree, no one to provide weapons
• Survey department concerned with supply and maintenance of artillery
• Given authoritative instruction, I removed cannon
• Arsenal's big guns passing round new yellow ball
• Survey may follow this type of armament
• 3 down, or there might be a ball round the North
• Anne Cord is in military supplies
• The Survey provides maps
• Department concerned with artillery