Why make it a comedy?
This could have been a really good drama film, but I was surprised at the comedic route it took . . . and sort of disappointed. It had character deaths, heavy and depressing themes, nice amounts of blood, and comedy . . . doesn't really fit in well, now, does it?
Well, the blood was never spilled in sadistic gunfights, but rather in usually depressing and slow deaths. With that said, there actually wasn't that much. I don't remember ever seeing a person's body while it got shot. Only the aftermath (with only blood, not limbs or bones sticking out of place).
I don't remember much language. It was as clean as a PG-13 war movie. Some cussing, but nothing escalated.
Don't worry about sex. There isn't anything worse that you would see in a Disney movie.
Smoking is present, but nothing illegal.
The movie is a bit depressing, but not inappropriate. It has a good story, good moral lessons, good characters, and all the likes. The execution wasn't the ABSOLUTE best, but I enjoyed watching it. If only it was a drama and ditched the comedic lines. Still, pretty good. The comedy wasn't TOO overpowering and somewhat incorporated well into the story. There wasn't a one-liner in the middle of a death scene.
EDIT: Oh yeah. I forgot about the actors. The only problem with that was the lead actor. He was ok, but he got HORRIBLY overpowered by the (very old and experianced) supporting cast.