The English used to refer to the Germans as the "Huns" during the Great War (World War I). In Ireland this was turned back on them; I remember a song of my youth called "Down by the Liffeyside", one of the less politically correct versions of which had the lines:
"And we'll have little children
And we'll rear them neat and clean
To shout 'Up de Valera'
And to sing about Sinn Féin.
[A small piece escapes me here]
"And we'll spike the guns
Of the Saxon Huns
Down by the Liffeyside".