It felt like watching Transformers but from the WWI set. The music felt totally out of place, thus being very repetitive in style and over scored. Couldn't make the connections. The acting and direction were boring. Actors were generally too soft and too welcoming between each other. The environment lost its hostility based on the XXI century kindness represented in the movie. Horrifying in that sense. The script had potential but many obvious Transformers like dialogue lines. The makeup felt wrong at all times. All actors and extras seemed to have come directly out of a very nice shower. Actors would only look stained (as well as their clothes) after accidents, though they still managed to somehow be quite clean again. I believe there lacked studying of this historial matter in every sense. Visually, the lightning was very well achieved, and most of the camera shots were very nice, though sometimes the movements were a bit overdone. CGI was noticeable in the ground explosions... even in the 70's they made it better than today. Sometimes it's just better to simulate the real thing. It's even cheaper than CGI.