Question: What was the nickname of the General of The Twelfth United States Army Group?

Related documents: [0]  [DOC] The Twelfth United States Army Group was the largest and most powerful United States Army formation ever to take to the field. It controlled the majority of American forces on the Western Front in 1944 and 1945. It was commanded by General Omar Bradley with its headquarters established in London on 14 July 1944. [END] 
[1]  [DOC] General of the Army Omar Nelson Bradley (February 12, 1893 – April 8, 1981), nicknamed "Brad", was a highly distinguished senior officer of the United States Army during and after World War II. Bradley was the first Chairman of the Joint Chiefs of Staff and oversaw the U.S. military's policy-making in the Korean War. [END]  
Answer: Brad
Brad