The Colonel INSIGNIA is a military rank that is typically represented by an EAGLE. The EAGLE is a symbol of strength and courage, and is often used to represent the highest ranks in the military. The term 'Colonel INSIGNIA' can be broken down into two parts: 'Colonel' which is a rank in the military, and 'INSIGNIA' which is a badge or emblem that is used to signify rank or office. The crossword solutions for this term are 'EAGLE' (5 letters) and 'EAGLES' (6 letters). Both words refer to the EAGLE which is the symbol of the Colonel INSIGNIA.