[Fiji Hill]

I don’t think the war in question is the Spanish Civil War because they sing of crossing the Rio Grande and not the Rio Bidasoa. So it could even be the US Civil War.

[Steely Tom]

I don’t think the war in question is the Spanish Civil War because they sing of crossing the Rio Grande and not the Rio Bidasoa. So it could even be the US Civil War.

Good point. I guess it's just kind of a BS song.

On the other hand "Rio Grande" just means "big river." There's only one Rio Grande in the Spanish-speaking world?

But still, I agree with you.