Fullmetal Alchemist [2003-2004] directed by Mizushima Seiji, based on the original work by Arakawa Hiromu. Season 1 contains episode 1-25. Also check out Fullmetal Alchemist Season 2, containing episodes 26-51 right here http://sherloc.indypl.org/?itemid=|library/marc/dynix|1399555
"Attack on Titan's Season 2 Hits a Brick Wall, But is This a Good Thing? | As bummed as I am that season 2 got pushed back, I totally agree with this article. I'd rather wait and avoid fillers - or worse the fate of the first Fullmetal Alchemist anime - than have them rush just to put something out.