Always enjoyed these threads and I think its been a while since the topic was last discussed, so let's run through the number again.
So the setup is that at the Second Washington Conference (https://en.wikipedia.org/wiki/Second_Washington_Conference) the US and British decide on a modified strategy from OTL - the opening of a Second Front in France following the invasion of North Africa. The British agree to this plan on the basis of a US promise to expand the upcoming landings in North Africa (Torch) to include Bizerte and divert US divisions and shipping from the Southeast Pacific to New Guinea (20%) and Northwest Europe (80%) - Operation Cartwheel is cancelled as a result.
The US begins the appropriate planning to have a 90 division force in Europe by 1943-44, constructing shipping to support the landing, and shifting training and deployment schedules of existing divisions. Equipment for Free French and Brazilian divisions is shifted to US divisions instead. The North Atlantic Campaign is also altered, with the Allies intensifying efforts to clear shipping lanes to the UK.
So in late 1942 (November) Super Torch goes ahead and Tunisia is overrun in a coup de main. Rommel has to evacuate Libya in early December, losing 20% of his forces (Though conversely German divisions and aircraft destroyed in OTL Tunisia stick around). Stalingrad goes ahead and from reading Endgame at Stalingrad by David Glantz I think I can say with confidence that it still ends about as OTL. In any case, winter on the Eastern Front ends with the Soviets going over to the defensive in spring 1943 to prepare for a German offensive in the summer.
So the Germans start getting intel in spring 1943 that an invasion is going ahead somewhere - the big question being, where? Judging by how well Mincemeat went IOTL, I think the Allies do a great job simulating a building in the Med while completing their setup in Europe. So the Axis ends up with its reserves all over the place. Even in France, German reserves are spread to cover the South, Southwest, North, and Northeast.
Worse, Von Runstedt (Commander of OB West) had little faith in the Atlantic Wall or defenses at the beach. His belief was that his armored reserves should be kept in depth to launch counterattacks later, essentially abandoning a sizeable lodgement to the Allies.
Of course, the Germans could cancel Citadel and start shifting divisions West. However, this runs into two problems. One, Citadel was seen by Hitler as well as his non-military inner circle as a political necessity to shore up the confidence of the Axis allies (Who after Stalingrad were already considering a separate peace). Two, the Soviet government's intelligence had its fingers on the pulse of German strategic decision making via several spy rings. If Citadel gets cancelled, the Soviets are sure to go on the offensive - a bloody affair, but one which will tie down everything the Germans have in reserve and more. IOTL after allthe Germans had to strip everything but Italy bare in 1943 to keep the Eastern Front afloat.
I could keep posting but there's a lot to discuss already, take it away people!
So the setup is that at the Second Washington Conference (https://en.wikipedia.org/wiki/Second_Washington_Conference) the US and British decide on a modified strategy from OTL - the opening of a Second Front in France following the invasion of North Africa. The British agree to this plan on the basis of a US promise to expand the upcoming landings in North Africa (Torch) to include Bizerte and divert US divisions and shipping from the Southeast Pacific to New Guinea (20%) and Northwest Europe (80%) - Operation Cartwheel is cancelled as a result.
The US begins the appropriate planning to have a 90 division force in Europe by 1943-44, constructing shipping to support the landing, and shifting training and deployment schedules of existing divisions. Equipment for Free French and Brazilian divisions is shifted to US divisions instead. The North Atlantic Campaign is also altered, with the Allies intensifying efforts to clear shipping lanes to the UK.
So in late 1942 (November) Super Torch goes ahead and Tunisia is overrun in a coup de main. Rommel has to evacuate Libya in early December, losing 20% of his forces (Though conversely German divisions and aircraft destroyed in OTL Tunisia stick around). Stalingrad goes ahead and from reading Endgame at Stalingrad by David Glantz I think I can say with confidence that it still ends about as OTL. In any case, winter on the Eastern Front ends with the Soviets going over to the defensive in spring 1943 to prepare for a German offensive in the summer.
So the Germans start getting intel in spring 1943 that an invasion is going ahead somewhere - the big question being, where? Judging by how well Mincemeat went IOTL, I think the Allies do a great job simulating a building in the Med while completing their setup in Europe. So the Axis ends up with its reserves all over the place. Even in France, German reserves are spread to cover the South, Southwest, North, and Northeast.
Worse, Von Runstedt (Commander of OB West) had little faith in the Atlantic Wall or defenses at the beach. His belief was that his armored reserves should be kept in depth to launch counterattacks later, essentially abandoning a sizeable lodgement to the Allies.
Of course, the Germans could cancel Citadel and start shifting divisions West. However, this runs into two problems. One, Citadel was seen by Hitler as well as his non-military inner circle as a political necessity to shore up the confidence of the Axis allies (Who after Stalingrad were already considering a separate peace). Two, the Soviet government's intelligence had its fingers on the pulse of German strategic decision making via several spy rings. If Citadel gets cancelled, the Soviets are sure to go on the offensive - a bloody affair, but one which will tie down everything the Germans have in reserve and more. IOTL after allthe Germans had to strip everything but Italy bare in 1943 to keep the Eastern Front afloat.
I could keep posting but there's a lot to discuss already, take it away people!