Can units be set to patrol?
Not in the original game. With the expansion pack a basic patrol can be set between two points. The first point is the starting position of the unit, the second point is assigned by selecting the patrol icon and clicking elsewhere on the map. The in-game help reads: “Soldiers can be used to protect objects. To do this, draw a frame around the units while the info mode is active. Right-click on the object to be protected and the soldier will take up his position.” …but I have not been able to get this to work.