Awesome Music: Girls und Panzer

Girls und Panzer has several well done versions of military marches, but Katyusha's and Nonna's respective voice actresses singing the Soviet-era song "Katyusha" became an instant fan favorite around the world.

In fact, every episode where Ōarai faces another school has an example of a historically known military march.
The series' composer also created original marches found throughout the series many of them including musical elements of "Panzer Vor!".