If this piques your interest at all I highly recommend Dan Carlin's Hardcore History where he did 6 parts and about 18 hours on WWI from a mostly military history perspective. He also did a shorter one on the eastern front in WWII.
It is uniformly excellent, and well worth the time commitment required to listen to the whole thing.
I've also enjoyed watching several episodes of "The Great War" on youtube, which seems to be of a similar quality. ( https://www.youtube.com/user/TheGreatWar )
Even the telling of the stories leaves one affected.