Definition of a Photon. A photon is the quantum of electromagnetic radiation. The term quantum is the smallest elemental unit of a quantity, or the smallest discrete amount of something.
General of the Army(GA) is a five-star general officer and is the second highest possible rank in the United States Army. A special rank of General of the Armies, which ranks above General of the Army, does exist but has only been conferred twice in the history of the Army.
General is the 28th rank in the United States Army, ranking above Lieutenant General and directly below General of the Army. A general is a General Officer at DoD paygrade O-10, with a starting monthly pay of $15,583.