Noun
Heruli pl (plural only)
(historical) An early Germanic people, mentioned by ancient Roman authors as one of several "Scythian" groups raiding Roman provinces in the Balkans and the Aegean Sea, attacking by land and sea.
Synonyms: Herules, Herulians
It is believed that it was from this time that the Romans instituted a Herul auxiliary unit, the Heruli seniores, who were stationed in northern Italy and often associated with the Batavian Batavi seniores. Source: Internet
It seems that, at first, a major naval expedition was led by the Heruli starting from north of the Black Sea and leading in the ravaging of many cities of Greece (among them, Athens and Sparta ). Source: Internet
Some historians feel there may have been a political motivation by placing the Heruli and Lombards in the centre dismounted, Narses possibly suspecting them of having sympathy or admiration for Totila. Source: Internet