Okay two brigades of the primary strike force, but if you'll note from my earlier post there were several other lands of >30k US forces in Morocco and Western Algeria. Only one of the landing forces was with British forces, IIRC Blade force.
They were stripped off to fight the US forces of the British 1st army at Kasserine, which is when Monty was able to beat the Italians by themselves.
Anton was in reaction to the landings in Algeria and the surrender/non-resistance was pre-negotiated.
https://en.wikipedia.org/wiki/Operation_Torch#Battle
The Eastern Task Force—aimed at Algiers—was commanded by Lieutenant-General Kenneth Anderson and consisted of two brigades from the British 78th and the U.S. 34th Infantry Divisions, along with two British Commando units (No.1 and No. 6 Commando), totaling 20,000 troops. During the landing phase the force was to be commanded by U.S. Major General Charles W. Ryder, commander of the 34th Division, as it was felt that a U.S.-led invasion would be more acceptable to the French defenders than one led by the British; many British troops wore American uniform, for the same reason. Naval forces were commanded by Vice-Admiral Sir Harold Burrough.
Aber wrote:
Without the US forces the British would have to detach a major part of their 1st army to garrison Morocco and Algeria
The US forces were there primarily to deter Spain. However the British did not believe that Spain would move against Morocco and would have not left such large forces there.
They would have left some forces and that all comes out of whatever can be used against French resistance in Algeria and the Axis in Tunisia.
Aber wrote:
Its not even a question of that, just that without the US forces to get a similar force level the entire British ground army in the European theater would pretty much have to be thrown into North Africa
No, there's roughly another 4 Corps in the UK. The US did not have more than 1 Corps in action until late in 1943.
How many could the British realistically remove from the Home Isle politically? 1-2 maybe. Even not counting all the occupation forces, IIRC the US forces were over 70k to the British 50K in Algeria/Tunisia, nor the air power and naval component, the British are going all in on their capacity for offensive action for invading Algeria. Did they have the necessary shipping to pull it off on their own? How about making up for the lack of US air power? The British could have replaced the 4 divisions in that 1 US corps, but at the same time they would likely have not gotten that French corps that switched sides either, and had to replace the >70K US ground troops in whatever they were doing while at the same time providing all the naval and air power, which I don't know where its coming from. I'm not saying it wasn't there, I just don't know where its coming from.
Aber wrote:
without the British the US couldn't have fought in Europe.
See above - Sicily and Italy are part of Europe.
Sure, but the landing in Sicily and Italy was a function of US shipping, airpower, and ground power. The British historically fought there alongside the US enabling it with its contributions:
https://en.wikipedia.org/wiki/Operation ... _of_battle
The destruction of the LW in the region was accomplished primarily via the US Mediterranean Air Command. Same with the strategic bombing of Italy and Romania in 1943.
Aber wrote:
There is no doubt that the US played a major part of the war in Europe, but their build up was slow and only really became dominant in late 1944 and 1945.
In late 1944? They were the major component in the air in the Mediterranean in 1943 and were pretty critical to the speedy and successful conclusion of Tunisia, and the invasion of Italy (the majority of the casualties in Italy were American). Normandy could not have happened without the US, or Dragoon.
https://en.wikipedia.org/wiki/Strategic ... _in_Europe
From 1942-45 the US dropped more bombs on Europe than the British did from 1939-45, launched more bomber sorties, destroyed more enemy aircraft, hit more German industry, and operated more bombers in Europe than the British. Removing US military contributions leaves a huge gaping hole in Allied efforts starting in 1942. Even assuming the British are able to pull off North Africa/Italy eventually there is going to be no Normandy, US strategic bombing, or destruction of the Luftwaffe by 1944. Having the Normandy forces available in the East in 1944 will make a huge difference there, as will the impact of having France not fall in 1944 and no West front that year, plus having a viable Luftwaffe, relatively intact industry and aerial defenses, no cut off trade with Spain and Turkey as a result of US pressure and the fall of France, and of course no ending of the V-1 threat quickly due to the Normandy invasion; the V-2 might not even be needed, which would save a lot of resources for the Luftwaffe to use for other projects. I'd say the US contribution was pretty vital from 1943-45.