Yeah, I've read both of them. I did enjoy reading them but I believe serious historians look down their noses at Antony Beevor. His books are very readable but they do verge on sensationalism at times.
I was actually referring to the First World War in my post above though. Its hard to find much about it anywhere. I could be way off the mark here, but I've always suspected that most of the soldiers in the Russian army, possibly the Austro-Hungarian Army too, were illiterate so there isn't many diaries or other source material that authors would use to research a book. Like I say, I could be well off the mark there but the fact remains that there's not many English language books about the Eastern Front in WW1.