Twelfth United States Army Group
Military formation
The Twelfth United States Army Group was the largest and most powerful United States Army formation ever to take to the field, commanding four field armies at its peak in 1945: First United States Army, Third United States Army, Ninth United... Wikipedia
Commander: General Omar Bradley
Branch: United States Army
Part of: Allied Expeditionary Force
Role: Army Group Headquarters
Size: 1.3 million men