Complex sentence: The Department of Defense, Army, and Air Force have referred to the "V" as the "V" Device, the Coast Guard, the Valor Device, and the Navy and Marine Corps, the Combat Distinguishing Device or Combat "V".
Split into simpler sentences: The Department of Defense, Army, and Air Force refer to the "V" as the "V" Device. The Coast Guard refers to it as the Valor Device, while the Navy and Marine Corps refer to it as the Combat Distinguishing Device or Combat "V".