"Girls und Panzer: This is the Real Anzio Battle!" is a direct-to-video anime episode that serves as a side story to the main "Girls und Panzer" series. The narrative centers on the Ooarai Girls' Academy and their preparation for a tank battle against Anzio High School, a rival team known for their cunning tactics and resourcefulness. The episode provides additional context to the events briefly depicted in the main series, expanding on the strategies and personalities involved in the match.

The story begins with the Ooarai team, led by Miho Nishizumi, receiving intelligence about Anzio's tank capabilities and tactics. Anzio, led by Anchovy, is portrayed as a smaller school with limited resources but a strong emphasis on creativity and adaptability. The Ooarai team, despite having a more diverse lineup of tanks, faces challenges in overcoming Anzio's unconventional strategies, which include the use of a modified CV.33 tankette and clever terrain utilization.

Key characters from both teams are highlighted, showcasing their roles in the battle. Miho's tactical expertise and leadership are central to Ooarai's efforts, while Anchovy's charisma and ingenuity drive Anzio's approach. The episode also delves into the camaraderie and teamwork within both teams, emphasizing the importance of trust and coordination in tank warfare.

The battle itself is depicted with a focus on strategy and execution. Ooarai must navigate Anzio's deceptive maneuvers and adapt to their unpredictable tactics. The episode balances moments of tension with lighthearted interactions, maintaining the series' signature blend of action and humor. Ultimately, the narrative provides a deeper understanding of the Anzio battle, enriching the overall "Girls und Panzer" universe by exploring the dynamics and challenges faced by both teams.