Good stuff
In all honesty, it may have just been better to skip the scrolling pictures intro. They set me up for something like a slideshow, but I stuck through them to watch the animation. I know that not everyone will do that, and may vote low just because they see the slideshow in the beginning.
However, the animation itself is solid. Very stylish, as it was almost all purely silhouettes. Some of your shots looked a bit more like World War 1 though; namely the people running through the no-man's lands only to be brutally cut down. Some further innacuracies (mortars don't give off a flash from the barrel) but those are purely nitpicking, and do little to affect the overall quality of the flash.
The music was a bit of an anachronism, but the mood it set went well with the animation itself. Good work, looking forward to more.