» Fri Aug 03, 2012 6:35 am
Because Bethesda hates you personally and wants to ruin your fun, of course.
But seriously,
Originally, the civil war quests would have been heavily radiant, with multiple repeatable quests and full sieges of cities like the one on Whiterun. These missions would come from your field CO, the essential officer -- every camp and every city has one.
It is possible that the resolution to the civil war was last-minute, and originally it had no ending, which explains why the officers remain essential after you take the opposing side's capital city.
It's entirely possible to simply down the officer and kill the rest, if you are inclined to bloodshed.