Atilla the Hun was leader of an empire from 435-453. His army is said to have also contained Austrogoths and Alans previously defeated in battle. According to reports they became feared enemies of the eastern and western roman empire, probably due to many military campaigns in europe and the middle east. Their reputation may have stemmed from reports that they took over churches and monasteries and murdered many priests and maidens.
Following the death of their uncle, brothers Atilla and Bleda made a treaty with Byzantines of the eastern roman empire which they later broke. They fought the neo Persian empire and invaded Armenia but were defeated. Reportedly Armenia was then invaded by persians. Vandals captured Carthage, thought to be an important roman stronghold and Huns vacated the Balkans to counter attack. Huns who were seemingly a great power by the time of Atilla’s reign were described as both slaves and masters to the roman empire. Reportedly Huns considered the romans as paying tribute while Rome viewed payments as for services. Following invasions during the 440’s, Atilla married the sister of Roman emporer Valentinian III, who also seemingly made him senior military officer.
There are various theories as to the origin of Atilla and the Huns. Huns are said by one source to have crossed the Volga river during the 370’s, but may have originated from modern day Bulgaria, possibly leaving Bulgaria folowing a feud.