We had a long thread some years ago on this, and a Torch landing in Southern France likely would have worked if the Allies got ashore and established a defensive perimeter to build up forces in rather than try and go on the offensive immediately after landing. German forces in France were at a low, the Atlantic Wall didn't exist, and much of the coast was defended very thinly by overstretched infantry divisions.Peter89 wrote: ↑06 Dec 2022 16:15Torch relied heavily on Gibraltar and the weakness of the Vichy forces. It was a first step of a learning curve, the Torch landings occured mostly without organized resistance. If they'd attack into NW Europe as per Marshall's wish, they'd probably be defeated.Carl Schwamberger wrote: ↑06 Dec 2022 14:33Peter89 wrote: ↑05 Dec 2022 18:58In any case, the Americans had to have a springboard, a base of operations. A port/network that could handle cca. 5-10,000 t / day of cargo.Carl Schwamberger wrote: ↑04 Dec 2022 22:07The fragments I have on the USNs plans for the Atlantic & east Atlantic littorals would be: First was updating WP GRAY to extend to the Azores. After that came up grading the Marine Expeditionary Brigade on the east coast from a planned division air ground team to a a corps size ground force and a designated fleet group together into what eventually was designated Amphibious Forces Atlantic Fleet in 1942. In the earlier iterations of 1941 the Army 1st Division was paired off with the Marines & continued the amphib training the Army revived at the end of 1939. By 1942 the plans were more ambitious & included more ambitious plans like RUBBER and corps size exercises. Other Army formations were attached to Amphib Forces Atlantic Fleet including the 9th Infantry Division. There was a similar effort on the west coast that included expanding the Marine brigade there to a full division and a air wing with support regiment or group. The Army 3rd Division started its first Divisionn sized Amphib exercise at the end of 1939. The 2d MarDiv contributed a combined arms brigade to the Iceland occupation in mid 1941 & the 3rd ID was moved to the Atlantic US coast to reinforce. The 5th Inf Div replaced the the Marines on Iceland a little later in 1941.
Anyway the Army & Navy were spinning up two amphibious groups to deploy corps size ground forces from early 1940. Unfortunately I lack detail on the complete array of fleet, air, and ground units involved. The mobilization as executed 1940-1942 had some sort of allowance for expeditionary forces, but again the details escape me.
What base of operations were planned & used for the GYMNAST and TORCH operations? Those had extended distances to the objective from ports of embarkation and subsequent LoC