What if Franco and a few top Nationalist generals die in the Spanish Civil War and the Republicans manage to win it?
They wouldn't back Nazi Germany even with the Molotov-Ribbentrop pact, given their ideological opposition. They wouldn't be solely an outpost of the USSR even with a mainly USSR-funded Republican victory.
As noted though, it depends why and how they won - British and French aid or even intervention would produce a different result to none. A social-democratic Spain might have either just remained neutral until near the end of the war, and probably would not join the Allies unless attacked or they were clearly winning and Spain was in no danger at all (late 1944-early 1945).
I, like Dr. Strangelove, think the Nazis invade Spain ITTL. The British ship enough troops to Spain to safeguard Gibraltor.
The straits are very narrow the Luftwaffe would have a field day bombing the crap out of a fleet that couldnt maneuver and would have very limited air cover and U boats would simply fire torps and almost garenteed to hit somthing that said Im assuming they would be fighting the Royal navies entire medeterrianian fleet if not the odds improve do to more manuevoring room.
The straits are very narrow the Luftwaffe would have a field day bombing the crap out of a fleet that couldnt maneuver and would have very limited air cover and U boats would simply fire torps and almost garenteed to hit somthing that said Im assuming they would be fighting the Royal navies entire medeterrianian fleet if not the odds improve do to more manuevoring room.
Because a single port wasnt worth invading spain.
I was just pointing out that the RN would have to be stupid to send a fleet into the straits and keep it there.
So spain gets invaded the allies decide to send a fleet to defend a single city.
If the Battle ships are to provide fire support they would have to stay in a fixed location in so the Luftwaffe gets to hit the same general area repeatedly and are opposed by fighters coming from airfields that werent built at the time. ships were at the time horrificly vunerable to aircraft, so a few Stukas could cause major damage.
U boats were probably worthless in the straits but hell they might get lucky.
Finally there is a HUGE difference from trying to sink convoy from across the sea and trying to hit warships staying in the same general area that said Goering will probably find a way to fuck it up as usual.
Why would it be worth in TTL unless Spain openly joins the Allies? After all Hitler was probably more pissed about Franco not joining after Germany helped him than he would a leadership he never helped.