I really liked your use of the reflection theme to explore the hopelessness of war, taking good advantage of the tailor-made nature of the Battle Brother and Havoc Brother factions as mirror images of each other. Very well done there. This is also going to be the first time I actually comment on a moodboard: your use of all greyscale images was a powerful and striking choice that set the mood well going into the story.
That said, the story was unfortunately very difficult to follow. I had to reread the description of the fortifications more than once, and I think some detail could have been sacrificed for clarity and precision there. You also don't mention the Havoc Brothers as the opposing faction until the bottom of the second column; since that reflection is key to your use of the theme, it really should be introduced right at the beginning.
Well done overall, though, and an effectively sombre and moody work.