There is a quote attributed to Ven. Pius XII, who may have said it or written it in 1953. I haven’t found an actual source yet. Which document or speech is this from?
“We belong to the Church Militant; and she is militant because on earth the powers of darkness are ever restless to encompass her destruction.”
And keep in mind that it maybe not have been Pius XII.
And there are variations on the theme.