Thank God we didn't fight for the so called Loyalists in Spain. Those anti Franco Communist were disgusting human beings who took great pleasure in searching out, torturing and killing Catholic priest and defiling, raping and then murdering nuns. And yes Franco was no walk in the park either.
But a neutral Spain was very useful during the war. Many Jews were saved by going through Spain.
Had Franco not won, Hitler probably occupies Spain.
Franco was a saint in comparison; we acknowledged that when we later reached out to him to help contain communism (with bases in Spain). His speech at that time, in which he describes how only so late did we realize what he and the other generals were fighting against, sums it up well.