* There is no fixed organization for an army group. A typical army group may contain one to four mechanized or tank armies. In lieu of some of these armies, it may have one or two mechanized or tank corps. However, some army groups may only have the smaller corps organizations. Some may also include separate mobile brigades; or mechanized infantry divisions; or tank divisions that are not part of a corps or an army. An army group may also have some divisions or separate brigades of motorized infantry. (See p. 1-86 and FM 100-63.) It may even have enough motorized infantry units to constitute an infantry army or corps.

** Airborne forces are not organic to an army group. However, a separate airborne infantry brigade may be under operational control of an army group. Higher command may allocate additional forces from an airborne division (p 5-87) to support an army group in a given operation; these are normally brigade-size elements (p 5-89).

*** The Main Intelligence Directorate of the General Staff controls all special-purpose forces (SPF). It normally allocates an SPF brigade to support the operations of an army group.

**** Higher command may allocate a naval infantry brigade to support an army group in a given operation.

***** Some army groups could have an artillery division or perhaps even two of them. If an army group has no more than one artillery division, it may also have a separate SP gun brigade and/or a separate MRL regiment or brigade.