"Fatal Terrain" is good as well. Released in 1997 so slightly more up to date. I read it hoping for fantastical descriptions of flying battleships hanging from a paper thin plot and was not remotely disappointed.
Dale Brown books are one of my guilty pleasures. Actually, Silver Tower was the first sci-fi book I remember reading when I was a kid. He went to military thrillers after that one and I've read all of them too. But Silver Tower and Old Dog are still two of my favorites.
