Merlin 60 series Spitfires began production in June 1942, Supermarine were trying to build the mark VIII, switched its mark V to mark IX, stopping V in September 1942 and then IX in June 1943, Castle Bromwich began mark IX production in February 1943 getting to over 100 per month in June. This means by end 1942 a total of 402 mark VII and IX had been built, 1,176 by end June, 2,966 by end December 1943, deduct losses, reserves etc. On 30 June 1943 the RAF had 242 mark VIII in Britain, along with 602 mark IX, another 113 IX overseas, while 205 were on the water, 2 VIII and 207 IX had been lost. Fighter Command had 156 Spitfire IX and 587 Spitfire V in operational units. Another count says 48 Spitfire squadrons, including 2 non operational, had 718 operational aircraft. Authorised squadron strength 18 aircraft. Fighter Command remained mostly operating mark V during 1943 as the overseas VIII and IX population grew, around 1,200 overseas out of 1,500.
Over in the 8th Air Force, serviceable P-47 serviceable strength went above 150 end May 1943, over 200 mid July, 300 mid September, and finished the year nudging 600, 21 P-38 end September, rising to 83 end year, 5 P-51 on 12 November, 52 by end year. It means the 8th Air Force June to August 1943 had 2 to 3 bombers available per fighter. Averaged over the year the weekly reports say 65% or under B-17, B-24 and P-47 were operational on a given day. Do the same calculation for the first 6 months and it is 42 to 51%, final 3 months 83 to 85%, the spare parts and maintenance systems took a while to catch up. On 23 June 1943 the 8th Air Force had 403 serviceable bombers and 179 P-47.
The USAAF first attacked Germany in January 1943 then took to 27 September to use radar bombing. In the period 15 October to 15 December 1943 the 8th Air force blind bombing operations resulted in 6 out of 151 groups bombing within 1 mile of the aiming point, 17 within 2 miles and 30 within 5 miles. This was about the accuracy seen by the RAF night bombers in 1941, via the Butt report. In December 1943 the estimate was 5% of bombs were within 5 miles of the aiming point, worse than the RAF 1941 night bombers. Around half the USAAF 1943 tonnage was dropped using blind bombing. After August 1944 the USAAF relaxed its blind bombing guidelines for attacking Germany, this was the major reason weather aborts in the 8th Air Force promptly dropped from 14.4% to 5.6%. Craven and Cate (US official history), in mid November 1944, that is a year on from the initial results, slightly more that 1/2 of the 8th Air Force blind bombing missions "near failures or worse".
The USSBS notes out of 524 target weather forecasts, 304 were accurate, in 1943 without radar bombing the USAAF had to wait for good weather, forecasts of which were accurate 155 out of 236 occasions, it could try poorer weather where 31 out of 182 occasions saw visual bombing weather, or launch in bad weather, 9 out of 106 ended up with visual weather. For the war 7% of 8th Air force B-17 and 11% of B-24 sorties became weather aborts. For most of 1943 the 8th Air Force was a good weather air force dropping modest amounts of bombs, this reinforced the beliefs precision strikes on key targets would work really well, otherwise why run most raids?
In 1943, depending on the month, 12 to 27% of 8th Air Force bombs dropped in good to fair visibility landed within 1,000 feet of the aiming point, in 1944 it was 25 to 45%. In 1943 each bomber generated 2 to 6 sorties per month, in 1944 6 to 12 sorties per month, fighters in 1943, 4 to 11 sorties per month, 1944, 7 to 23 sorties per month. In 1943 225,618 hours of combat flying time, in 1944 2,020,285 hours (training 202,829 versus 830,259 hours) with the note flying times for early 1943 are partially estimated. Overall 84% of bomber sorties attacked a target, in 1943 it was 78%.
Bomber Command first use of H2S in major raid was 30 January 1943. For the its the dams raid was very destructive, but it was a one only, the RAF needed to form 617 wing and do a night, at best two nights of raids, after that the defences would be too strong and changed to cope with bouncing bombs. The dams were repaired as a priority. In 1942 the average Lancaster bomb load for a night operation was around 6,200 pounds, in 1943, 9,000 pounds, in 1944 10,000 pounds.
Bomber Command day operations 1942, 2,386 despatched, 1,617 attacking, 1,713.7 tons of bombs dropped, 115 aircraft missing, 14 write offs, 29 personnel killed, 452 missing. January to May 1943 1,797 despatched, 1,209 attacking, 1,229.7 tons of bombs, 63 aircraft missing, 13 write offs, 219 personnel killed or missing.
Allied air force capacities were much smaller in early 1943 compared with late 1943 in just about every aspect and dwarfed capacity in January 1942.
RAF bombers came equipped with flare chutes, also used to drop leaflets and later disperse window.
German fuel stocks were boosted in mid 1940 by the captures in western Europe, operation Barbarossa reduced stocks back to early war levels where the stayed until the final quarter of 1943, despite fuel production going from 5.5 million tonnes in 1941 to 7.5 million in 1943. Aviation fuel output about doubled 1941 to 1943, accounting for nearly half the increase in output, the army in the east was being supplied directly from Romania at least which helps explain almost no increase in German motor fuel production.
T: Each major city is a candidate for a firestorm. For this reason, no minor attacks should be directed at any such city, so as to preserve all combustible materials within that city.
Another it will be all right on the night, not much need for rehearsals, the training and actual experience to get the bomb concentrations in time and space to have a chance of creating major lasting damage.
Air assets should be preserved through winter months by reduced tempo, so that a maximum effort can be made in summer, for the best chance for a firestorm.
Interesting as the 8th Air Force operations 1943/44 meant the Luftwaffe day fighter force was denied its usual rest period, setting it up for the losses later in 1944.
(There's a lot to unpack, as the man said.)
Which explains why the luggage was promptly handed back to the porter with orders to remove it. Still no idea whether it will be a day and night campaign or only a day one.
No they don't. Deeper penetration gives the defence more options, not more obligations. All of Germany can be defended on a given line running NNE.
Yes they do, Germany can be defended Kammhuber style, push through/saturate that and no more interceptions. The size of Germany meant defending fighters started to carry drop tanks in order to have the range to intercept.
Spitfire I economic cruise range 575 miles, or 395 miles deducting combat allowance, fast cruise range (often needed to catch bombers moving at 200+mph), 415 miles, then deduct combat allowance. The larger the target area the more dispersed the defences have to be and the larger the number of fighters out of range of a given attack.
Fighter bases WILL be placed as far forward as possible. Just how far forward IS possible in a given case is another matter. Note that Norwich is not on the coast.
Every seen a map of 8th Air Force fighter bases? Anyway just add more airfields to the construction list in 1942/43 as the system tries to cope with expansion of existing bases for larger aircraft and the arrivals of the 8th then 9th Air Forces.
In reply to Fighters at economic speed in a war zone are either targets or spectators unless they are lucky.
There are no absolutes. Experience will dictate, as will circumstance. There is already a wealth of targets within 300 mile range. If the target is e.g. Hamburg, economy will rise on the list of priorities.
Bomber Command used distances from Lincoln UK to target,
Hamburg 435 miles
Bremen 394 miles
Cologne 356 miles
Emden 320 miles
In the period to 31 August 1944 some 2.7% of 8th Air Force B-17s listed as lost to fighters made it back to allied territory, versus 6.4% of those listed as lost to flak. For the period 1 September 1944 to the end of the war the figures become 5.8% and 16.6%. The penalty for long range fighting.
What is the contribution to this data from missions escorted all the way to the target?
You mean you do not know that? Your whole idea is you can arrange escorted missions with low enough loss rates to enable continual operations. So what are the numbers? What does escorted all the way to target mean in terms of numbers of fighters to number of bombers? All we are being given is a bunch of assumptions about a force that will be initially outnumbered and generally flying fighters with lower performance than the defenders will do great things but only when the European weather is clear enough for visual bombing, concentrating on a sub section of enemy territory, which by the way is another limit, Germany is big enough to have visual weather in parts and non visual in others.
In reply to Name the Luftwaffe airbases in Netherlands/Belgium/France that were catered to the moon in 1942/43, how big a percentage that was of airbases available, and how long the stayed out of action, hint start at around 0.
I might reiterate that this is an issue of doing things differently than historically was the case.
To put it another way, if allied airpower could do as much in 1942/43 as being claimed, we would all be talking about how in 1940 the Luftwaffe destroyed Fighter Command and caused so much destruction in South East England there was a surrender before any German soldier came ashore.
However we are really talking about a fixed conclusion, one that near totally ignores reality.