Have you guys seen WWII The Complete History in 13 approximately 1 hour segments? If not it's worth watching.
The story starts at the end of WWI detailing the political climate that led to the outbreak of WWII. There's a lot of good information on the world leaders, politics, strategy, technology and of course, awesome war footage of every type from every part of the world including several tidbits of information I never knew about.
Be warned that once you get started it's kind of addicting. I'm through the first six episodes watching 2-3 at a sitting.
Here's a link to episode 1:
https://www.youtube.com/watch?v=3mFG0Du_DKUIf you haven't seen it enjoy.