I thought the night battle scene was done well. Once gets the sense that it is no video game (important for this generation) and the whole lead-up to the battle set the stage well -- you get the sense that the Japanese really know what they are doing, and if they charge, it's no mistake. The three who come out of the jungle in the morning, the guy with the grenade, both little things that ad up to the understanding of how brutal it was, and how brutal the Marines had to become to win.
I'm really looking forward to the rest of this series.