If they are bandido, casco, tregua they are identical to the Italian bandito, casco, tregua. The only difference is a d/t. Actually in Italy a cyclist and a worker wear a casco, but a soldier wears an elmetto.
I googled the etymology of casco and it comes from Latin but it came to Italy from Spain a few centuries ago. So I wonder what other word for helmet they use in Spain, that originated in the Goth language.
[–] anon84873628 16 hours ago
>The "ez" signifies "son of". The name Rodrigo is the Spanish form of the German name Roderich, meaning "rich in fame", from the Gothic elements "hrod" (fame or glory) and "ric" (rich). It was the name of Roderic, the last Visigothic King before the Muslim conquest, and the subject of many legends. The surname Rodríguez could have originated in the 9th century when patronymic names originated.
https://en.wikipedia.org/wiki/Rodr%C3%ADguez_(surname)
The Visigoths directly ruled in Iberia so that's an example of the "elite influence" spreading culture and language.
There are plenty of other warlike terms in https://en.wiktionary.org/wiki/Category:Spanish_terms_derive... such as gaita (bagpipes).