How we cite our quotes: (Part.Chapter.Paragraph)
Quote #4
The war had come as a nightmare in which you chose your nightmare side. Once chosen, you put your head down and went on to win. (1.4.151)
According to Shaara, Longstreet wasn't that big on the Southern "Cause," even though he was fighting for it. Here, he sees the war as pointless slaughter—but, now, since he's picked his side, his duty is to follow through to the bitter end.
Quote #5
Napoleon once said, "The logical end to defensive warfare is surrender." (2.1.68)
Lee is a general akin to Napoleon, whereas Longstreet favors defensive war. In fact, as Shaara points out in the book's afterword, Longstreet was ahead of his time, anticipating the prolonged trench warfare used during World War I.
Quote #6
"We must attack," General Lee said forcefully. "We must attack. I would rather not have done it upon this ground, but every moment we delay the enemy uses to reinforce himself. We cannot support ourselves in this country. We cannot let him work around behind us and cut us off from home." (3.3.21)
Lee is trying to justify his decision to attack the Northern line instead of following Longstreet's plan. (Longstreet wanted to swing around the Union Army and cut it off from Washington.) Since Lee's plan ended with the disaster of Pickett's Charge, maybe Longstreet was right, after all.