The term 'Army Bigwig' refers to a high-ranking military officer in the United States Army. The two crossword solutions for this term are 'GENERAL' (7 letters) and 'Infantry GENERAL' (15 letters). A GENERAL is an officer of high rank in the US Army, typically one who holds the highest rank below that of a Field Marshal or GENERAL of the Army. An Infantry GENERAL is a GENERAL who specializes in infantry tactics and commands an infantry division.