Japan's Studio Anima publicized its computer-animated adaptation of Motofumi Kobayashi's Cat Shit One manga at Tokyo International Anime Fair this week. ADV Manga released three volumes of the original Cat Shit One manga under the title Apocalypse Meow in North America. The manga follows three American soldiers — Bota, Perky and Rats — during the Vietnam War . The trio just happen to be cute animals in the Cat Shit One recon group.
The 12-episode anime series of "real and fierce combat by cute and fluffy animal" updates the manga's premise by making the three soldiers part of a modern private military company. In the first episode, the three attempt to rescue hostages, but end up surrounded by guerrillas demanding the withdrawal of United States Armed Forces in the area. (The original manga had an updated manga sequel with a similar premise called Cat Shit One '80.
source: An Eternal Thought in the Mind of Godzilla blog (Patrick Macias)
BTW, Thats not exactly related to above but it reminds me some shows with similar treatment by using a cute character to play with violence... such as Happy Tree Friends.