Erika (Auf der Heide blüht ein kleines Blümelein/On the Heath a Little Flower Blooms) was a march song used for the German troops (mainly the Schutzstaffel) during the 1930s and the Second World War. It was composed by Herms Niel. The song (along with Panzerlied) is used by Kuromorimine Girls High School.