Simply it's a great anime, one of the best.. No stretching, very powerful dialog, all characters are unique and played by a great voice actors.. The back story of charterers shows how wars were very cruel, it's not based on a true story but those stories were happened million of times during wars, and also this anime shows how much people can change because of war, a perfect story this anime introduced for us.. A very good music and soundtracks, not a perfect drawings and arts but it still one of the best.. I am very excited for the forth season..