I agree with MV64 about WWI being the more interesting study. Growing up near a major military base, Ft. Bragg, there was a lot of history to learn about, WWII, Vietnam, Korea and so forth, but not a lot on WWI as we Americans did not play as major a part as other countries did. As I grew older my interest in the war increased and I began to realize just how much of an affect WWI had on the world, more so that WWII I feel. I always felt the cold war, as it's known, really started when Russia succumbed to its own internal conflicts and fell into Communism. One of the more interesting subjects I read about recently was the American invasion of Russia in 1918. Yes, you read that right, the United States of America, and the United Kingdom as well, invaded Russia in 1918. Sound interesting? Then I recommend you check out "When Hell Froze Over".
http://www.amazon.com/gp/product/0743407261
While I won't say it's the greatest book I've ever read, I found the subject matter fascinating and couldn't put it down, nor believe what I was reading. If you're interested in learning about a little known incident from WWI, then it's worth a read.