role play for two seconds: you are god, and your generals just prayed to you before marching into enemy province for battle. They ask you for guidance. You can either give them scripted orders that they should follow, or you leave them to decided themselves what to do. Trust your generals, or use your awesome power to give them divine orders. Now, what kind of God would you be if you told your generals to follow the same orders over and over again, reguardless of what they're facing? And if you don't know what they'll be facing, then you aren't doing a very good job at being omniscient! In which case they'll be better off reacting on their own then following your generic orders.
