The Bus Came Back: When Rebecca resupplies Mustang's troops, she's accompanied by Maria Ross, who hasn't had a role since "The Arrogant Palm of a Small Human," 32 episodes ago.
Evil Cannot Comprehend Good: General Klemin is outraged when he finds out that Mustang and his team are going out of their way to avoid killing Central Soldiers, believing they're doing so just to mock them rather than because they're actually trying to avoid killing people who don't know just how evil their superiors are.
Foreshadowing: Hohenheim mentions that if the worst case scenario comes to pass, he has a countermeasure to Father's Nationwide Transmutation Circle. What this back-up plan is will be revealed 11 episodes later in "He Who Would Swallow God."
Lethally Stupid: It really was not a good idea to activate an army of nigh-invincible creatures before tests were completed.
Moral Myopia: General Fox and Gardner accuse Olivier of betraying her country, which rings hollow coming from corrupt generals willing to sacrifice the people of their country just to become immortal. Olivier rightfully calls them out on it.
No Name Given: The general who activates the Mannequin Soldiers, or "Mannequin General", as well as the scientist who protests the aforementioned actionnote because the soul-bonding tests weren't finished. Their names are never revealed.
Shut Up, Hannibal!: When General Fox tries to justify the Senior Staff's actions are for the good of the nation and that sacrificing the population of Amestris is necessary, Olivier isn't having it and stabs him through the arm while giving a very good "Reason You Suck" Speech to him and Gardner.
Olivier Armstrong: You scum sit back and safely watch the battlefield as if it were some kind of spectator sport. You don't know anything about "sacrifice" and yet you're the first to talk about its necessity. Gardner: You're betraying your country! Olivier: You think so? Our country could very well regard me as a hero once this is all over. However, I'm still not as merciful as our celebrated hero of Ishval. Gardner: No, wait—
Smug Snake: The Mannequin General. He is too self-satisfied for his own good, dismissing a scientist's concerns that the Mannequin Soldiers' soul-bonding tests aren't finished, and so aren't ready to be released. This ends up being what gets him killed in the following episode.
Too Dumb to Live: The Mannequin General activates the Mannequin Soldiers—an army of nigh-invincible pseudo-homunculi creatures—before soul-bonding tests on them are completed. In the following episode, it's revealed that the Mannequin Soldiers are not loyal to the general, and devour him. What a surprise!