I also agree that Red River is fun, i enjoyed dragon rising but it had it's flaws.
My only disagreement with this game is that for the most part, it's very restrictive, you have a small corridor in which to play and if you stray too far it's game over.
As far as realism goes this missed the mark in a few places. During mission 7 where you are ordered to hold the bridge, the PLA were swarming me so i decided to pull out and retreat over the bridge but because i wasn't supposed to, as soon as our humvee got to the bridge it exploded.
What i like about dragon rising was the option to approach an objective how i wanted to. But then again if you look at a real life Marine squad they are restricted to their commander's orders, so in that respect, red river gave a glimpse of what it would be like to be a marine in that position.
Maybe if the game was to follow a group of force recon marines there would be more freedom in how you approached a situation?