My planning assumptions are -
1. With the cancellation of Barbarossa, the Axis can support a major offensive in the Med, and that the fuel not spent in Russia is sufficient for a naval war against Britain.
2. The Axis can control Iberia and maintain communications sufficient to support a major fleet there.
3. The occupation of Iberia and the fall of Gibraltar would weaken the RN in the Med, and that Malta will fall.
4. The Axis can move shipping from the Atlantic to ease the shipping problems in the Med, and use Marsailles to enhance overstrained Italian shipping facilities.
5. The Tunisian deep water ports provide the extra 'umpf' necessary for North African logistics.
6. That the Axis transferring barges and such to the Med to create over-the-beach logistics are not to be part of our discussion
7. The French fleet may or may not be captured, but the occupation of all Vichy ports gives access to more shipping and some warships may be captured or repairable after scuttling.
8. Crete can be transformed into a forward offensive air and sea base using captured Greek resources.
9. That if Germany and the USSR agree to partition Turkey, the British will lose the entire Middle East.
10. That even if the British were to lose the ME, the British would not yet be defeated in the war.
1) Right. Assuming they've got the sealift, at least.
2) Define "control".
3) Well, that'd take at least six months if they turned up in front of Gibralter instantly. With the time taken to essentially subdue a still-very-militarized country with crap logistics and lots of rifles? With the Nationalists hating your communist allies, the Republicans hating you, and both sides hating the Germans? I'd say eight months to a year from the start of the invasion.
4) They can dash through a couple of warships, once. General ship movement is literally asking for the Royal Navy to sink it. BTW, the Germans didn't have much shipping either.
5) The Tunisian deep water ports are still thousands of miles away from the front line. Most of it will need lorries, and because you need to account for the fuel those lorries burn - and French tiralleurs - it might not help all that much.
6) Because it'd be impossible anyway. So the small German fleet of large steamers is the logistical boost... right. Easy targets for the RN, I'd say.
7) Why would occupation of ports necessarily give more shipping? Most of the fleets of surrendered powers went straight into the Allied pool, not the Axis one. And the warships may well be TCL - Total Constructive Loss - meaning that it's cheaper and easier to break them up for scrap and build a new one. As I believe they were OTL.
8) Crete has awful logistics, and supplying it exposes your ships to the RN.
9)
Turkey won't agree to partition Turkey! You're now tied down in a
second guerilla war with terrible logistics - there ain't many train lines there - and all your mountain troops are already engaged in the Pyrenees. And the Atlases. Meanwhile, the British Indian Army is deploying through Persia to the Middle East, thus hinging the unhinged flank. (OTL, the deployment of troops here was relatively sparse, because the area wasn't much threatened. That changes here, and the B.I.A can number several million, all volunteers.) This means that you need large numbers of trucks to:
Carry supplies from and to rail heads
Carry supplies over the Pyrenees when you're attacking through them
Carry supplies for your invasion of Turkey - and through Turkey
Carry supplies in Africa
And carry supplies through the Middle East
And those six million trucks are going to evaporate surprisingly fast, because a LOT of them are captured French/British/Dutch/Belgian/Polish/Czech/Whoever, and as such your repairs logistics is going to be both complicated and nigh incomprehensible.
Partisans are going to be ambushing and destroying the trucks wherever they can (it only takes a log in the road and a rifle, and then you've shot the driver and can steal or wreck the truck plus supplies).
10)
That I can agree with.
Question. If you seem to think that it's entirely doable to use only trucks to supply a force of ~15-20 divisions, then why is it that logistics is highlighted as the reason every advance in the war petered out? And why is it that trucks are very much
(Heck. Your truck supply route from Tunis has to carry 4,400 km worth of fuel per truck load round trip, which amounts according to your numbers to 1,320 litres of fuel per truckload. Which is 3,000 lb of fuel. Yes, your trucks are over half full of
fuel. THIS kind of thing is why supply runs aren't very useful over that kind of distance - you end up spending most of your supply capacity just carrying fuel.)
http://www.almc.army.mil/alog/issues/JanFeb01/MS610.htm
cites that for one motorized division, for 300 miles away from the point of supply, it was estimated that 39 columns each of 30 2-ton trucks would be needed
over and above the divisional transport. That's essentially 1,200 trucks, for one division, for 300 miles.
"Considering the size of the forces in the theater and the unavailability, on average, of 35 percent of his vehicles because of mechanical problems, Rommel would have needed over 5,000 trucks dedicated to supplying his three divisions over a 300-mile line of communication."
And remember, it takes
more than double the trucks for double the transport distance, because you have to move the fuel.