Technically, the Roman Empire survived until 1453 as the Eastern Roman Empire, also called the Byzantine Empire. Other historians say 1806 when the Holy Roman Empire was abolished by Napoleon Bonaparte.
The Holy Roman Empire is considered to be the First Reich, correct? Just as the German Empire was the Second Reich and National Socialist Germany the Third Reich.
"Military men are dumb, stupid animals to be used as pawns for foreign policy."
--Henry A. Kissinger, jewish politician and advisor