I guess General Grant himself would disagree with some arguments in this thread {sm4}. He served with many of his "enemies" in the Mexican War ( including General Lee) and always treated them with a great respect just read his book " Personal Memoirs of U. S. Grant"... It's really surprise me when some people compare "Brother against brother" war with Allied vs Axis powers in WW2. Could not you really see the difference?
I would recomment to read "The Politically Incorrect Guide to the Civil War" by HW Croker.
In The Politically Incorrect Guide to the Civil War Crocker profiles eminent--and colorful--military generals including the noble Lee, the controversial Sherman, the indefatigable Grant, the legendary Stonewall Jackson, and the notorious Nathan Bedford Forrest. He also includes thought-provoking chapters such as "The Civil War in Sixteen Battles You Should Know" and the most devastatingly politically incorrect chapter of all, "What If the South Had Won?" Along the way, he reveals a huge number of little-known truths, including why Robert E. Lee had a higher regard for African Americans than Lincoln did; how, if there had been no Civil War, the South would have abolished slavery peaceably (as every other country in the Western Hemisphere did in the nineteenth century); and how the Confederate States of America might have helped the Allies win World War I sooner. Bet your history professor never told you:
* Leading Northern generals--like McClellan and Sherman--hated abolitionists
* Bombing people "back to the Stone Age" got its start with the Federal siege of Vicksburg
* General Sherman professed not to know which was "the greater evil": slavery or democracy
* Stonewall Jackson founded a Sunday school for slaves where he taught them how to read
* General James Longstreet fought the Battle of Sharpsburg in his carpet slippers
I would also recommend a book "If The South Had Won The Civil War "by MacKinlay Kantor as an interesting fictional alternative of the Civil War result {sm4}