Hagane no renkinjutsushi - Season 1 Episode 15

As the Strong Arm Alchemist holds off Scar, he realizes that the killer is from Ishbal. Meanwhile, as Ed, Al and Doctor Marcoh make their way through the village, the Doctor recounts the Ishbal ‘Rebellion\’ and how he and the other State Alchemist were ordered to level the entire city using the Red Stones. The events still haunt Marcoh, Mustang and Armstrong to this day.