Armeegruppe was a historical type of major formation of German military history, in use in the Imperial German Army during World War I and the Wehrmacht during World War II.
While the term literally translates as army group, the German-language equivalent of an English-language army group is Heeresgruppe. Whereas a Heeresgruppe-type army group was designed to be permanent, an Armeegruppe-type army group was usually an ad hoc formation for a specific military task. Typically, Armeegruppe-type formations were short-lived.
Whereas Heeresgruppe-type formations were typically named after a geographic region (such as Heeresgruppe Courland), geographic direction (such as Heeresgruppe North) or even named by simple letters (such as Army Group A), Armeegruppe-type army groups were typically named after their commanding general, e.g. Army Group Steiner was named after Felix Steiner.