ORIGINAL: Bullwinkle58
If anyone is really into "hard" technothrillers I would also recomend Eric L. Harry, especially "Arc Light." Eric was a short-term e-mail friend and we shared an agent for a time, but I don't think he writes anymore. He has a full time job as an international legal counsel in the petroleum industry. But he was very well-versed in military affairs when he was writing and his plots were very tight. He writes some of the best depictions of first-person close combat I've read from modern authors.
"Arc Light" is a WWIII novel with a scope to match RSR. "Invasion" is about a continental invasion of the USA. The premise is not as well done, but the setpiece scenes are excellent. Either of those I would recco.
http://www.amazon.com/Arc-Light-Eric-Ha ... eric+harry
is the "Arc Light" lisitng on Amazon. I don't know what's up with the price; mine is a regular pocketbook-sized version I paid $5 for back in the day. But you can read the customer reviews.
I have this in my library, and I would recommend this as well.