Fullmetal Alchemist: Fullmetal Edition, Vol. 13

In an alchemical ritual gone wrong, Edward Elric lost his arm and his leg, and his brother Alphonse became nothing but a soul in a suit of armor. The mysterious origins of the homunculi are revealed, and the brothers' father positions himself for the coming conflict against these foes.

Fullmetal Alchemist: Fullmetal Edition, Volume 13, by Hiromu Arakawa.