The Slopes Of War went into great depth, the book was very interesting with first person perspectives and used fictional characters.
The website was rather boring and didn't go into as great as depth as the book, was not very detailed like the novel, gave many facts and skipped ahead of the battle instead of going through every detail of the days.
Both the Website and the Novel
Both the website and the book are alike because they both mention the same names (Culp's Hill, Devil's Den ect.) The book and the website also mentioned there were about 51,000 casualties.