Armeeoberkommando

It was equivalent to a British, French, American, Italian, Japanese, or Imperial Russian "Army".

Its chiefs of general staff were: to 1 March 1917, Field Marshal Conrad; from 2 November 1918, Arthur Arz.

During World War II, an AOK (usually commanded by a Generaloberst ("colonel general" or above) controlled several army corps and had its own army troops, e.g. heavy artillery, engineers, and other specialist troops that were subordinated to it depending on availability and task.

Demands and allocation of logistic supplies usually went straight to the Oberquartiermeister ("senior quartermaster") of the AOK; the army group command was only involved in situations of crisis.

In the course of the war, in certain places as a stopgap alongside the AOKs, there were ad hoc formations called armeeabteilungen ("army troops") and kampfgruppen ("battle groups").