Allan's "Slightly earlier Torch Lite" makes a lot of sense and fits not only with his "nudges" to OTL but also with the character of Roosevelt and the stronger position of the British ITTL.. Pointless militarily as the Free French may have been in modern hindsight , the diplomatic status of France as a conquered nation/ oldest ally of US etc.. is going to weigh more heavily on an East Coast Rich Kid Lawyer born in the 1880s than seen from today's perspective. And the US had few practical other options in Mid'42. (Ok maybe ITTL - buy Valiants blueprints, make 20,000 in Detroit pronto, give them to Patton and tell him to drive to Berlin but I digress).
Can't see Midway ITTL. IJN just hasn't got it's western "flank" secured. Army, not IJN, still has political control in Tokyo. For now, although it's star is not shining as brightly, its strength comes from the corruption and money coming in from Manchuria and that is untouched.
Don't leave me this way... oh wrong Somerville
Yes Pearl was as OTL but the wheels have come off since. OTL the all conquering - please , please come out and fight us, IJN 1st Air Group 第一航空艦隊 (aka Kido Butai) controlled all of the South China sea and had roamed with near impunity around the Indian Ocean in March/ April looking for a fight with the RN (with some success .. although if you really want an Alternate History then Somerville's Force A finds them at night ,which he came ....oh so close to.. with Radar equipped Albacores.. whilst 6 on 2 Carriers sounds like even more impossible odds than Midway , Force A had tough as nails armoured carriers and IJN carriers .. a glass jaw isn't even fair to glass .. they were more like floating molotov cocktails - HMS Illustrious took and , just, survived the poundage of hits that the USN sank FOUR IJN Carriers with.. and that wasn't a fluke - Amagi and Unryu , supposedly a more advanced design, took only 1 and 2 torpedos to sink and Shinano .. managed to sink herself with no help from anyone such was the complete lack of any Japanese damage control, compounded by a design philosphy that , like the Zero, sacrificed everything to get more aircraft on it. Hanger decks BELOW the waterline.... hell I've had curry induced bowel movements that could probably sink a Japanese carrier nevermind a single stringbag launched torpedo in the dead of night! In addition they were a lot longer from re-supply, if Somerville had anything left over the next day ,and make no mistake it would have been a very difficult next day even if he'd bagged 2 to 3 carriers,but he had two HMS Rocky Balboa* Class carriers with him, he'd be able to smash them at night whenever he chose as IJN limped home...but well that's ......alternate history).
From Beatlemania to K-Pop
ITTL IJN are surely blaming the Army for failures but also are much more boxed in by increasing Allied air power and the RN's most advanced and best / well supplied global military base in the South China sea (ITTL - Now with All new for '42 , the housewive's delight...... centametric Radar! Buy her one today and she'll love you for it). Singapore is still a "fully operational battle station". The incredibly expensive building of Singapore Naval base (sorry tank fans but for a quarter of it's 1930s cost you could have had 1000 Vicker's mediums , 500 Birch guns and 200 Mathilda IIs at Arras) was THE single reason for the change of IJN and political position of "Oh we love you RN, look at our shiny badges that look just like yours, we want to be you when we grow up" , to "F*^& your racist white Imperial Victorian A$% holes, we are the IJN and we will destroy you ". All joking aside, simply committing to building the base at Sinagpore in 1923, nevermind the actual sheer size of it, utterly , and rightly, pissed off the IJN and swung them much further into the nationalist Bushido camp, it was, in the eyes of the more liberal (hey relative to Japanese Army) IJN a betrayal of the alliance with British of the First World War and considered a grave insult as it could only serve a purpose to fight the British supposed Allies... Japan. IJN and RN were super buddy buddy for a long time. Singapore base construction killed that. My Great Uncle (Royal Marines) was based in Yokohama in 1920s. He was very welcome and the RN worked earned a lot of respect helping in the aftermath of the Kanto earthquake. Singapore base killed that.
Sinagpore was a very impressive ,1930s Modern, fully equipped base, meant to both shield the pride of the Empire( India) AND project power as far east as the Monroe doctrine would allow it. My father was on HMS Eagle in 70/71 in the final "lets close ye olde shoppe and cower east of Suez RN" tour based at Singapore when the British closed it. Even 40 years after it was build he said it was incredibly impressive , the best and most impressive RN base he had served from *, put Portsmouth and Faslane to shame , it was impregnable from the Sea, sensibly laid out , massive dry docks, fuel and repair facilities - bascially equipped to support a full naval war singlehandedly. Still have a lot of crappy teak furniture he bought though....
Go West
Anyway, IJN doctrine would love a free hand for a decisive battle with US, and whilst Yamamoto was no fool, he did want to show the superiority of his Carriers. But with Singapore still "the Dagger at Japan's heart" as the IJN viewed it.. they don't have a free hand for Pacific adventures. Every day they delay though their immense carrier force becomes less dominant. It's still the most powerful fleet afloat in May '42...no one else can put that number of modern naval aircraft "punch" together in one spot anywhere, but it's hemmed in and will become increasingly as useful as the IJN Giant Battleships.. too big to risk deploying while in range of Allied land based aircraft. It will be wittled away, a sub hit there, aircraft lost to RAF/ USAAF here, until eventually a much more one sided Midway (and OTL Midway was , floating molotov cocktail hidden weakness aside, very much in IJN favour yet they still got creamed). IJN are doomed ITTL. Utterly doomed. I pity the Fools.
*Nagumo: I'm gonna bust you up.
Somerville: Go for it.
** Scapa Flow by far, far the worst. Permanently staffed base ended in the late 50s just before his time in the 60s, but occasionally a Frigate or Diesel Sub (he served on both) would come by and take shelter in the bay, do sonar training on the wrecks, check on things etc. Desolate, freezing, wind and rainswept, rusting with depressing remants of the rotting wooden barracks that once housed tens of thousands. Whilst fascinating to my dad from a historical perspective, he really wasn't sure if mentally he'd rather be in the hell of the WW1 Trenches than face 4 years stuck there.