Allied Spain in WWII?

Is it possible to/how could you have Spain join WWII on the Allied side? Depending on when they join, how would this change things? If the were with France and Britain from the start could a western front throughout the war have been possible? If they entered the war later, could the need for d-day have been avoided?
 
Depends on how far back of a POD we allow.

A POD resulting in a stronger Spanish Republic without a civil war would do wonders.
 
Depends on how far back of a POD we allow.

A POD resulting in a stronger Spanish Republic without a civil war would do wonders.

Any POD which keeps the cause of the war up until the invasion of France at least familiar and not tooooooooo different. This still needs to be WWII.
 
If Spain in, Portugal has to shape up or else. No hiding places for U-boats along the Atlantic coast of peninusula. No wolfram for Germany. Allied access to Canaries and Azores. Expansion of British air base beyond the confines of Gib. Torch doesn't have to land in Morocco; all the invasion forces go into Med, Tunis gets taken before Germany can rush in troops. BUT....lack of huge bag of POWs in Tunisia in spring of 1943 may have a negative effect on the Eastern front.
 
IMO Franco might make tentative feelers towards the allies in late September after seeing the success of the allied landings in Italy and Sicily, provided the benefits were big enough (help rebuilding the transport network and modernising industry might be enough, but I don't know).
 
On the gameboard a Spanish entry on the Allied side makes a difference in 1943. the Allies are strong enough to reinforce the Spanish army, and it is soon enough to develop Spain as a entry point into France. Unfortunatly in this scenario the Spanish people lose due to the revival of war on Spanish soil.

A later entry in 1944 is less decisive as development of the Spanish transportation to support large Allied armies would actually delay a campaign in France.
 
I don't think Francoist fascist Spain would have joined the Allies. You'd have to at least have the fascists lose the civil war, and more likely get rid of the war entirely
 
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