People k!ll me with that "it's a metaphor for what happened to our land" bulls**t. I have nothing against blood and gore or any kind of film, but come the f**k on.
Do you understand the usage of metaphor in film? If not then why ask such a useless question?
Film isn't just a-b, straight lines, and clear comprehension. Some artists use metaphorical analogies to link one idea to another, here the source is the film used to link to the target, war. The film is an allegory not meant to be taken literally as shocking and violent. Those who do leave the film allowing the others who think and see past the obvious to look for its meaning.
This film isn't for you if you don't understand it on a deeper level, that can sound as pretentious as you want it to be but the fact remains that you won't see anything more than gore and blood, which is a simplistic way to look at the film. It isn't a horror movie, and to be honest the blood is far from the flaw of the film, the acting is worse if anything.