Abraham Lincoln went through 12 generals before he got Ulysses S. Grant. He had never done a Civil War before.
Most historians agree that Abraham Lincoln was the most important man to ever occupy the White House because he abolished slavery and kept the states united through a bloody civil war.
As a kid, I was growing up in an era of celebration of the Civil War centennial, with a lot of 'Lost Cause' emphasis on the Confederacy. I used to play Civil War soldiers with my brothers as a child, and my older brother always insisted that he got to be Lee, and I got be Grant. I never knew that Grant won until quite some time had passed.
We have to bring stability to Iraq, otherwise we will be faced with a future dilemma of sending our loved ones into harms way to stop a civil war or the rise of a new tyrant born from the instability that we created.
Causes of Civil War are also, that the Wealth of the Nation is in too few mens hands, and that no certain means are provided to keep all men from a necessity either to beg, or steal, or be Souldiers.