A couple of other superheavy pieces that are ideally suited to employment in urban combat would be the T94 250mm mortar and the 24" howitzer (some details and pics on Warships Projects a few years back). There could also the 32pdr Tortoise and the 7.2” armed Conway if something was required from British design and production.
There is also the possibility of new weapons being developed in response to the very different tactical and strategic problems faced here as compared to @ late 50s; this has not really occured, with technological developments (particularly aircraft) developing somewhat earlier with the same names and roles.
That, to me, is one of the few very minor issues with this well structured timeline, along with the issue of foregoing the use of atomic weapons and other errata.
Whilst the imagery of WW2 operations with mid 50s aircraft is one that appeals to many, it requires a lot of changes to their intended role and purpose to the point of being different aircraft. However, the issue of nuclear use has been well addressed and falls comfortably within the realm of authorial fiat without being too jarring.
The development of aircraft would be affected by butterflies in the 1947-1954 period, and perhaps turn out rather differently. Not all of the historical aircraft and weapons would see service, and some new planes could well be developed in response to the different lessons of the hot war and the needs of the cold war.
A few examples:
1.) With Britain intact and relatively secure, there is an excellent airbase available well within range of Nazi Europe. This could well result in a focus on performance and bomb carrying capacity to the exclusion of range for some heavy and strategic bombers.
The B-47 will develop as in @, but the B-52 did grow out of the twin requirements of strategic atomic strike and not having to operate from foreign territory. Whilst the latter capability is useful, with an active Nazi enemy, it would perhaps not be the foremost characteristic desired, and the design process would be rather different.
2.) The B-47 would be converted to being capable of delivering conventional weapons a lot sooner than the 1960s.
3.) The F-105 would develop rather differently without an initial focus on delivery of nuclear weapons to the exclusion of a conventional role, and could therefore be a rather different aircraft.
4.) The lack of a Korean War would influence a lot of US and Allied fighter design, resulting in different requirements, different armament and different roles as compared to @ aircraft introduced slightly earlier.
One example of where this works well is the logical development of the EB-36 for the purposes of Continental Air Defence.
The RN seems rather small and tied to the circumstances of the Second World War prior to the growth of a very strong Nazi fleet, and there is nothing new beyond early 40s designs. This can also be applied to Britain in general, which has many drivers towards different levels and types of military development, but to a large extent simply pursue @ weapon systems and technological developments a little earlier.
Some examples and issues
- Using US aircraft (Wildcats and Avengers) on escort carriers in 1954 when there are Fireflies and Sea Furies available with substantially better performance
- Mosquitoes, Catalinas and Liberators in service with the RCAF in 1954 is not optimal.
- RAF developing the @ trio of V-Bombers in radically different circumstances rather than one or two types of aircraft.
- British would have some rather capable 3.7” and 5.25” rapid fire or automatic AA guns in heavy service by 1954 with the continuation of an air threat directly across the Channel, along with some sort of intermediate SAGW that would be augmented by a different Thunderbird and Bloodhound.
The threat is different, so the weapons would reflect it, catering to fighters and short range rockets as well as medium altitude bombers. Perhaps the first generation SAGW would be closer to the anti-kamikaze weapons that were mooted historically in order to overcome mass attacks.
There would not be a need of a 17pdr Skysweeper when a 3.7” Longhand is present, nor for the 4.5” to not be replaced by the 5.25”, possibly incorporating Green Mace.
For intermediate use, the 42mm Red Queen would be quite useful and probably see service by 1954.
- The 3”70 could be fast tracked by both the USN and RN, which would add substantially to the AA firepower of the Allied fleets.
- It is possible that intermediate swept wing jet fighters will be introduced by the RAF in the late 40s and early 50s in the face of a direct threat. This would have a flow on effect on the likes of the Hunter, Swift, Javelin (and Lightning), which could be developed in their more capable variant, particularly the P.1083.
Indeed, it is quite likely that the Swift wouldn’t see service in such a circumstance.
- The RAF using Lincolns and, to a lesser extent, B-36s in 1954 is not necessarily logical given the very different circumstances. There were other potential aircraft that could see development given the very early point of departure, such as the Avro 684, the Vickers C or the 100 ton bomber.
All of these have much high performance and operating altitudes, which allows the RAF to save money and lives, both of which would be at a premium for a war damaged Britain and also perform the mission of air launching missiles much more effectively.
The Lincoln could see service in the Pacific and into the late 1940s, but would not remain in service with a wartime RAF into the mid 1950s as it did with a cash strapped peacetime RAF.
- Vulcans had the capacity to haul more than 21000lb over reasonable distances if modified, and there are a lot of drivers to suggest that they would have been designed differently in this scenario.
- There would not be enough production capacity or funds to support using V-Bombers in a conventional strategic bombing campaigns where they suffered considerable attrition. Losing 17 Valiants over Hamburg to no real effect costs as much as a new battleship.
Only 329 V-Bombers were built historically, and even with the requirements of wartime, a damaged Britain is not going to be able to support more than 500 of them.
They are weapons designed for high altitude atomic strike, not for conventional bombing, and it is essentially wasting them (and the pilots, training and money) to use them like simply bigger and faster Lancasters. They will not survive a 2 year intensive bombing campaign and the British war economy simply couldn’t afford such a loss, given that annual production would extend to several dozen aircraft.
If more were lost than the OTL production level of 329 aircraft, then the cost would be pushing 500 million pounds, or a huge proportion of available British military expenditure.
Considering that total British expenditure on the Second World was around 25000 million pounds, with 4500 million in 43 and 44, and Britain in 1954 not being able to support the same level of expenditure with a lack of any postwar economic rebuilding and the loss of foreign markets, this is more than simply being an enormous cost resulting in the US being worse off. This is a situation whereby Britain cannot afford to fight anymore, and particularly not in the deliberately handicapped manner being pursued.
This could play out in the story in the form of extreme inter-Allied friction, or with the Americans completely taking over the role of strategic bombing, or with the RAF operating American bombers. That essentially makes it into an American-Nazi War.
The fleet couldn’t be maintained at the WW2 or interbellum level with two years of that type of hot war.
Even without the costs of supporting the Soviet Union and fighting in North Africa, the British economic cupboard will be bare, and indeed will be in the process of being repossessed. The major damage done by the loss of foreign assets and markets in South America in 1940 and 1941 will still occur, and the US will move into the remaining Imperial markets over the course of the late 40s and early 50s.
There will be an ongoing labour shortage with mobilized forces, several years further war damage and losses to cater for, and a lack of many of the historical circumstances which allowed for postwar economic recovery.
This means that in addition to Lend Lease, there will need to be a huge amount of direct aid and funding to Britain by the US, and nothing really to gain by doing so; this would be on top of the 4.5 billion USD given as substitute Marshall Aid.
Essentially, Britain cannot really afford to fight a conventional war in this scenario – this is the most striking issue that comes up out of the timeline so far.
- Early model Meteors and Vampires in Fighter Command service in 1954, as important parts no less, doesn’t really make sense with a hostile enemy a few minutes flying time away. The highest priority would be placed on the air defence of Great Britain and that would require transonic aircraft with equivalent performance to the F-86D and great firepower at a minimum, such as an evolved Hawker P.1081.
Now, Meteor night fighters are certainly something that would be around, and Vampires would be a good aircraft for service with the Royal Auxiliary Air Force, but not as frontline fighters.
- The Commonwealth countries would struggle to afford to operate Essex class carriers, let alone Midways given not only the costs but the very large manning requirements; Australia in particular was demobbing troops to help industrial production well before the end of the war. Given an extended war, things can change, though, such as population growth
A better situation would be the RCN with the Midway and Australia with the Essex
- The RN is extremely deficient in carriers compared to the USN, something that isn’t particularly reflective of their role or focus.
Given the ongoing war and the extended fighting in the Pacific, the carriers built could be 6 Illustrious/Implacable, 4 Audacious, 4 Malta; 8 Centaur CVLs and 4 of 16 Colossus/Majestics in RN service, with the balance serving with CW and Allied navies
That gives 26 RN ships (10 CV, 4 CVB, 12 CVL) to the 39 (24 CV, 7 CVB and 8 CVL) of the USN, with a lot more USN escort carriers and the CVAs entering service.
The Maltas would be done by 1954, so the situation where it seems that two are working up makes sense.
- This is a different fleet to @, but the RN has a very different tactical and strategic situation confronting it, and different lessons from the war, as compared to the threat posed by the Soviet Union. It doesn’t make sense to have the same aircraft as historical if there are viable reasons for different development and indeed viable reasons for different carriers.
Rather than Sea Hawks, some sort of navalised P.1081 could operated with swept wing DH.116 Sea Venoms and some variant of the Supermarine Scimitar.
Whether the Buccaneer would be developed would depend on whether NA.39 is issued. Given that tactical nuclear warfare is not the first resort, and that there is a considerable RN cruiser and carrier fleet available and most significantly there is no Sverdlov problem, the drivers to develop the Buccaneer in the form it took historically don’t really exist.
With an ongoing war and German battleship construction, the RN may operate more than 4 KGVs and 3 Vanguards. Certainly, nothing on the level of the Tentative Fleet Replacement Program, but perhaps 4 KGV, 4 Vanguards and 2-4 Lions based on the late war designs that incorporated modern AA schemes; they could possibly have 12 x 16” if so required.
The Lions do not need to be saved, but rather, started in 1945/46 to replace the likes of the QEs, Renown and Nelsol/Rodnol, given a growing German surface threat. The Vanguards (if more than one are built, then they can follow the lines of the prewar plans) are suited to replacing the Rs, using their guns, and for service in the Pacific and Med.
The Neptune class cruisers would most probably get a guernsey with additional RN cruiser losses, along with a full run of Minotaurs. These would replace the likes of the Arethusas and Leanders, with the Towns, Crown Colonies and Didos sticking around. The Counties could get a limited refit, but their long term replacement would possibly be based on the guided missile cruiser studies of the time.
Whether they will be affordable in the wider context of this war is a different matter.
Armament options would be the automatic 6” mount, a US supplied 8” turret, or something completely different.
- The British Army will lack the capacity to absorb very large losses in manpower and will follow the general Allied proclivity towards the use of technology and equipment in the place of losing men; of course, this is strongly related to the overall issue of the cost of a conventional war.