In the Soviet Union this type of organizational unit was called a "front".
The army group (lowercase a) is not to be confused with an (uppercase A) Army, e.g. The Free Country Army could be composed of the First, Third, and Ninth armies.
cantamorada: RT@DevindraThe Side-Hug:Youth group Puts Down Sinful 'Front-Hugs' With Rap http://bit.ly/6VFFzE Good lord. Is this really what it's come to?
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WillisLMiller: Philippine business group buys 28 pct of sanmig for $1.36 bln http://bit.ly/7943dO