Of course, Joe.
La canción "No nos moverán" es originaria del movimiento musical estadounidense. En España se adaptó. Pero, no es española. Además, no es una de las canciones originales de nuestra guerra civil.
Espero haberle aclarado el tema.
The song "No nos moverán" was originated in the USA musical movement. It was adapted in Spain, but it is not Spanish. Besides, it is not one of the original songs of our Civil War.
I hope to have clarified the subject for you.