A term with a few different meanings, depending on the context of its use.
The Huns were a tribe of Asiatic nomads who, under the leadership of Atilla the Hun (also known as the "Scourge of God" by Europeans who feared him) in the 5th century
AD, swept into
Europe with his infamous horde of mounted archers. Under his leadership, they pillaged/sacked/razed many towns and villages belonging to the Roman Empire, and other tribespeople who were in Europe at the
time (namely the Germanic tribes). Relatively little is known about this group of people.
The term resurfaced in the early 20th century, when WWI broke out. By the Allied powers, it became a derogatory term for any German soldier (much like "Fritz" and "Jerry" were also used to refer to Germans). It stayed in use as late as WWII. It was akin to the terms "
Tommy" (for
English soldiers) and "
Yank" (for
US soldiers).
The Huns swept through
Europe, threatening Rome and local tribespeople.
"C'mon, you Hun bastards,
get outta your fucking dugouts! I got a hundred
Maxim rounds with your names on them!"