I found the first 35 minutes very boring indeed, but after that it picked up a lot. The “plot” was predictable (young everyman called up, trained by idiots, reduced to a cipher and then sacrificed pointlessly on D-Day) and the actor playing the lead was ridiculously middle-class. However, some of the restored archive footage was amazing and the way the new sequences were shot with old 1930s lenses was very clever and the joins were almost seamless. Worth seeing for its technical skill.