Irisdina introduces Lise to the squadron, to the shock of Theodor, who cannot believe he's been reunited with his sister after being separated three years ago. Irisdina and Gretel express concern Lise may have been brainwashed, sent as a spy against the National People's Army and the 666th specifically. Irisdina orders Theodor to figure out what Lise is up to. During a training exercise, they meet up with European Union forces, and join an operation to retake BETA-held territory in the former Poland with the goal of expanding a beachhead near Gdańsk. During the battle, the 666th is deep into the BETA position when they realize the EU forces have fired artillery in their direction; Katia tells them Western forces would never expect TSFs to advance so far. Irisina orders a retreat, which Gretel countermands because of the political embarrassment of admitting the Western strategy is superior. With bombardment underway, a West German TSF squadron provides cover for the 666th's escape, firing cruise missiles to finish the battle decisively, to Gretel's humiliation.