When the Roman Army began to add to itself auxiliary troops (drilled of course after the Roman fashion and forming one body with the Roman forces, but contracted for “in bulk,” as it were) the chieftains of these barbaric and often small bodies were called in the official language, _Reges_. Thus Alaric, a Roman officer and nothing more, was the _Rex_ of his officially appointed auxiliary force; and since the nucleus of that force had _once_ been a small body of Goths, and since Alaric held his position as an officer of that auxiliary force because he had once been, by inheritance, a chieftain of the Goths, the word _Rex_ was attached to his Imperial Commission in the Roman Army, and there was added to it the name of that particular barbaric tribe with which his command had originally been connected. He was _Rex_ of the Roman auxiliary troops called “Goths.” The “_Rex_” in Spain was “_Rex Gotorum_,” not “_Rex Hispaniæ_”—that was altogether a later idea. The Rex in Northern France was not _Rex Galliæ_, he was “_Rex Francorum_.” In each case he was the _Rex_ of the particular auxiliary troop from which his ancestors—sometimes generations before—had originally drawn their Imperial Commission and their right to be officers in the Roman Army. Thus you will have the _Rex Francorum_, or King of the Franks, so styled in the Palatium at Paris, as late as, say, 700 A.D. Not because any body of “Franks” still survived as a separate corps—they had been but a couple of regiments or so [Footnote: We have documentary record. The greater part of the Frankish auxiliaries under Clovis were baptized with their General. They came to 4,000 men.] two hundred years before and had long disappeared—but because the original title had derived from a Roman auxiliary force of Franks.