Fullmetal Alchemist: Brotherhood - episode 50 - 27 Mar, 2010

As Mustang's team are cornered by the Central soldiers, Mustang's old Ishval squadron intervenes and saves them. Meanwhile, the Briggs Fortress soldiers, led by Buccaneer, join the battle. As Mustang's team begins to run low on ammunition, they are saved by Maria Ross and Rebecca Catalina. Mustang calls the person who had Ross return from Xing, and he is surprised to hear Havoc at the other end. During the chaos, Edward's group manages to sneak underground via the third laboratory, where the group then splits up. Edward, Scar, Darius, Jerso, and Zampano go in one direction while Hohenheim and Lan Fan go in the other. However, at that moment, one of the generals awakens the mannequin soldiers. (Source: Wikipedia)