Since there wasn't a review for this film at the time of writing this, I figured I'd give my thoughts.
Though I appreciate its sprawling shots and attention to detail (having literally hundreds of men dressed in armor,  the careful and deliberate shots of Shingen and those bowing to him, etc.), it was a fairly slow movie, and I don't feel I really got to know any of the characters. The actors did a good job, but one general in particular was prone to overacting (literally shouting his lines in an otherwise silent room, which seemed a bit much); the score was used mainly for battle scenes, and the songs fit thematically. Viewed from a historical fiction perspective, it was a satisfying epic that had several transitional periods in the movie, and its conclusion seemed fitting, but I wouldn't necessarily recommend it or rewatch it any time soon.