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.
The rank is that of the most senior operational military commanders, and within NATO 's standard rank scale it is designated by the code OF-10. Not all armed forces have such a rank, and in those that do the actual insignia of the five-star ranks may not contain five stars.n times of peace, it is usually held only as an honorary rank. Despite the rarity and seniority of five-star officers, even more senior ranks have been adopted in the United States, namely, admiral of the navy and general of the armies.