I found this DVD boxset by accident as I was looking into information concerning WOI which is in the Netherlands not that much of a big deal history wise as we were neutral (and were left to our selves by the Germans).
It does give some serious insight into the history of the first big War and does place it well into context, doesn't fall into the trap of focusing to much in one particular battle but tell enough, so that if the viewer is interested he/she can go and find out more themselves on the specifics.
The shocking bits are the actual images of real footage from that war, that make it so much more dark.
A very well balanced documentary on one of the largest wars of the last 100 years. Should be considered watching for all.