Remnants of the falling Roman Empire somehow halted an invasion by this man & his Huns in 451 A.D. near Chalons
[DOC] [TLE] Battle of the Catalaunian Plains - Wikipedia [PAR] The Battle of the Catalaunian Plains (or Fields), also called the Battle of Chlons 
or the Battle of Maurica, took place on June 20, 451 AD between a coalition led 
by the Roman general Flavius Aetius and ... Fall of the Western Roman Empire ...