Situation: In midst of a war. At start of war 3 enemy caravans were in my territory, far from any army units. Each turn, I start cycling thru list of enemies, to see if anything important. "The dang caravans again, never mind".
Oops - one turn, there was an enemy army I had not noticed, that came in from a different side than I expected. They took out the nearest city.
If the caravans were listed last, then I would simply stop cycling thru enemies when I got to them. Knowing I hadn't missed anything important.