I'm about halfway through James Jones' novel 'Thin Red Line'. Never have I read such a vivid (and horrifying) account of small scale infantry combat. I urge everyone who wants to get a better feel of what CM is simulating to read this book. The descriptions of C-for-Charlie Company's attack in 'The Bowling Alley' towards Hill209 makes me fully appreciate how WELL CM is done since I can visualize the whole thing as a CM battle (deployment of platoons, company mortars, MG etc.). Reading this will make you also appreciate what you DON'T see in CM (the blood, the terror, the insanity, and what's going on inside the soldiers' heads during the attack); there's nothing sanitized in this book. Not that I'm complaining about CM being sanitized, but this will give you the 'full monty' and you will appreciate your CM experience all the more for it.
S!
p.s. I haven't seen the movie and don't intend to. READ THE BOOK.