Fullmetal Alchemist, Vol. 17(2007)

Hiromu Arakawa

A homunculus manages to breach impenetrable Fort Briggs, and the Elric brothers discover a terrible alchemical secret that penetrates every corner of the world as they know it! Meanwhile, Major Kimblee and a ruthless General Raven make Major General Olivier Mira Armstrong an offer she can't refuse...

Whose side is she on, really? And how far is she willing to go?