I forgot to mention how sad these documentaries are to watch. The human carnage is unimaginable. I have relatives that fought on both the east and west front in WWI. I'll never be able to image what they and the young men/women went through during those horrible years of war.
Here's another one to watch:
Ypres: The Gas Inferno
** be warned, don't watch if you have a weak stomach.
** were lucky for most of us our only experience with war will be on the electronic battlefield. But, we should keep a place in our heart for the men/women that weren't so lucky.