The locality of the Alemanni was the parts about the Limes Romanus, a boundary which, in the time of Alexander Severus, Niebuhr thinks they first broke through. Hence they were the Marchmen of the frontier, whoever those Marchmen were. Other such Marchmen were the Suevi; unless, indeed, we consider the two names as synonymous. Zeuss admits that, between the Suevi of Suabia, and the Alemanni, no tangible difference can be found." _R. G. Lathan, The Germania of Tacitus; Epilegomena, section 11._ ALSO IN _T. Smith, Arminius, part 2, chapter 1._ See also, SUEVI, and BAVARIANS. ALEMANNI: A. D. 259. Invasion of Gaul and Italy. The Alemanni, "hovering on the frontiers of the Empire ... increased the general disorder that ensued after the death of Decius. They inflicted severe wounds on the rich provinces of Gaul; they were the first who removed the veil that covered the feeble majesty of Italy. A numerous body of the Alemanni penetrated across the Danube and through the Rhætian Alps into the plains of Lombardy, advanced as far as Ravenna and displayed the victorious banners of barbarians almost in sight of Rome [A. D. 259]. The insult and the danger rekindled in the senate some sparks of their ancient virtue. Both the Emperors were engaged in far distant wars--Valerian in the East and Galienus on the Rhine." The senators, however, succeeded in confronting the audacious invaders with a force which checked their advance, and they "retired into Germany laden with spoil." _E. Gibbon, Decline and Fall of the Roman Empire, chapter 10. https://www.gutenberg.org/ebooks/25717_ {36} ALEMANNI: A. D. 270. Invasion of Italy. Italy was invaded by the Alemanni, for the second time, in the reign of Anrelian, A. D. 270. They ravaged the provinces from the Danube to the Po, and were retreating, laden with spoils, when the vigorous Emperor intercepted them, on the banks of the former river. Half the host was permitted to cross the Danube; the other half was surprised and surrounded. But these last, unable to regain their own country, broke through the Roman lines at their rear and sped into Italy again, spreading havoc as they went. It was only after three great battles,--one near Placentia, in which the Romans were almost beaten, another on the Metaurus (where Hasdrubal was defeated), and a third near Pavia,--that the Germanic invaders were destroyed. _E. Gibbon, Decline and Fall of the Roman Empire, chapter 11. https://www.gutenberg.org/ebooks/25717_ ALEMANNI: A. D. 355-361. Repulse by Julian. See GAUL: A. D. 355-361. ALEMANNI: A. D. 365-367. Invasion of Gaul.