The best reason for civilian oversight over the military is the need for perspective.
Those in the military train their entire lives to fight and their job is to fight well.
That, however, gives you blinders.
Civilian oversight allows, hopefully, for prudent decisionmaking.
D is the answer the south had more effective milliatary commanders
They were false accusations against the U.S army.
I think that the answer is A. (im not so sure)
I hope this helps :) (im so sorry if this is wrong)