Short answer: A war comic.

Long answer: A war comic about Vietnam, written by a Japanese, that uses animal characters as metaphors. Americans are rabbits because of a pun on the word "usagi". USA GI.

Check this out, it's a different settings, and the characters have different roles (they're scouts in the comic), but this just kicks ass all over the place:

https://www.dailymotion.com/video/x7mzewj

I was a huge Sgt Rock fan as a kid.

Oh, and don't expect comedy, and since the writer of the comic is Japanese, you don't get the sort of self-flagellation that American stories like to run with when it comes to that war. If you liked that video, I think you'll enjoy the comic, too.

Short answer: A war comic.

Long answer: A war comic about Vietnam, written by a Japanese, that uses animal characters as metaphors. Americans are rabbits because of a pun on the word "usagi". USA GI. Check this out, it's a different settings, and the characters have different roles (they're scouts in the comic), but this just kicks ass all over the place:

https://www.dailymotion.com/video/x7mzewj

I was a huge Sgt Rock fan as a kid.