It doesn't look like anyone's posted this idea up till now, but imho it would be a simple enough interface fix that would make one aspect of the game much more enjoyable, and reduce micro-management. The sentry command for units is useful in its own way, but sometimes you don't have enough units to blanket cover the area you want to watch, so you move the unit up and down the "border" / sea-lane in order to check for encroaching units from other civs. I particularly find myself doing this with naval units as they're so damn expensive to build, I don't want to spend too many resources on them if I can avoid it. What I would like is a command which brings up a patrol route definition tool. I choose the squares I want the unit to patrol, and then it does that automatically at the beginning of every turn from now on. Should the patrolling unit catch sight of an enemy unit the patrol would be woken up (like a sentry) so that it pops up as something requiring attention, but otherwise continues on its merry way. The patrol routes could be multi-turn patrols if the unit's movement allowance was insufficient to complete it in a turn. The only difficulty I see is how to wake the patrolling unit if it only spots an enemy when it reaches the final square of its patrol - i.e. runs out of movement points. Talking of this does remind me that fortified units could ideally have some kind of similar wake facility on sight of an enemy, or at least those which are resting from battle. How many scouts have you lost because you forgot about the approaching bear you could see from two turns out (being on top of a hill), because your scout didn't wake himself in the interests of self-preservation? A further expansion of the waking on sighting an enemy would be to be able to define civs of concern, e.g. your number one enemy whom you just happen to be temporarily at peace with. I would really like to know - and be reminded!! - if he/she send a huge invasion armada towards my lands straight through my cordon of ships strung out across mid-ocean specifically to watch for such an eventuality. On the flip side one could also flag certain enemy units fortified stationary inside your territory that 'yes I know they're there: please stop waking my chariot (who can't fortify) unless they move again, because they're not a major concern right now'.