Big Week

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Operation Argument

Date	February 20, 1944 - February 25, 1944
Location	Nazi Germany
Result	Limited Allied victory

Belligerents

US Eighth Air Force

US Fifteenth Air Force

RAF Bomber Command

RAF Fighter Command

Luftwaffe

Commanders

Jimmy Doolittle, Carl Spaatz

Hermann Göring

Casualties and losses

RAF: 131 Bombers^[1], USAF: 247 bombers and 28 fighters lost

355 Fighters, nearly 100 pilots KIA^[2]

Between February 20 and February 25 1944, as part of the European strategic bombing campaign, the United States Strategic Air Forces (USSTAF) launched Operation Argument, a series of missions against Third Reich that became known as Big Week. The planners intended to lure the Luftwaffe into a decisive battle by launching massive attacks on the German aircraft industry. By defeating the Luftwaffe, the Allies would achieve air superiority and the invasion of Europe could proceed.

1 Background
2 Operations
3 Followup
4 RAF bomber sorties during Big Week
5 References
6 Further reading
7 Footnotes

[edit] Background

Prior to the Big Week, throughout 1943, the U.S. 8th Air Force had been growing in size and experience, and started pressing attacks deeper into Germany. It was believed that the defensive firepower of the B-17 and B-24 bombers, typically ten .50 caliber machine guns or more, would allow them to defend themselves as long as they remained arranged into tight formations, allowing for overlapping fire. In practice this proved less successful; although the bombers did claim a fair number of German fighters, losses among the bombers were unsustainable.

The Schweinfurt-Regensburg missions are a famous example. On August 17, 1943, 230 bombers launched a mission against the ball bearing factories in Schweinfurt and another 146 against the aircraft factories in Regensburg. Of this force, 60 aircraft were lost before returning to base, and another 87 had to be scrapped due to irreparable damage. The Germans claimed 27 fighters lost, serious enough, but paling in comparison to the losses on the part of the US forces. A second raid on October 14, 1943 faired almost as poorly; of the 291 aircraft on the mission, 77 were lost. Daylight missions into Germany were called off in order to rebuild the forces.

The raids were extensively studied by both forces. The Germans concluded that their current strategy of deploying twin-engine designs with heavy armament was working well. Over the winter of 1943/44 they continued this program, adding to their heavy fighter ranks and developing heavier armaments for all of their aircraft. They also pulled almost all of their fighter forces back into Germany, as the majority of their losses were due to fighter actions over forward areas. There seemed to be no point to try attacking the bombers with enemy fighters in the area. The Allied forces came to other conclusions. Schweinfurt demonstrated that the bombers were not able to protect themselves, contrary to earlier thinking, and fighter cover had to be extended over the entire mission. Luckily for the U.S., the P-51 Mustang was just starting to arrive in quantity, an aircraft that had the range to escort the bombers to targets deep within Germany. Over the winter they re-organized their fighter squadrons as P-51's arrived and longer-range versions of their existing aircraft were developed.

By the time the winter weather started to clear in early 1944, both forces had implemented their plans and were waiting to put them into action. The U.S., expecting a fighter advantage, planned missions that would demand a German response. They decided to make massive raids on the German fighter factories; if the Germans chose not to respond they would be at risk of losing the air war without firing a shot, if they did respond, they would meet fighters in the process. But the Germans needed no provocation, they were ready to meet any future raid with their newly prepared forces. But by up-gunning their fighters they reduced their performance, making them easy targets for the new Mustangs that they were not expecting.

[edit] Operations

The Americans flew heavily escorted missions against airframe manufacturing and assembly plants and other targets in numerous German cities including; Leipzig, Brunswick, Gotha, Regensburg, Schweinfurt, Augsburg, Stuttgart and Steyr. In six days, the Eighth Air Force bombers based in England flew more than 3,000 sorties and the Fifteenth Air Force based in Italy more than 500. Together they dropped roughly 10,000 tons of bombs.

During Big Week the Eighth Air Force lost 97 B-17s, 40 B-24's, and another 20 scrapped due to damage.^[3] The Fifteenth Air Force lost 90 aircraft and American fighter losses stood at 28. Although these numbers are high in absolute terms, the numbers of bombers involved in the missions was much higher than previously, and the losses represented a much smaller percentage of the attacking force. The earlier Schweinfurt missions cost the force just under 30% of their aircraft, for the Big Week it was under 7%.

U.S. aircrews claimed more than 500 German fighters destroyed, though the numbers were massively exaggerated.^[4] The Luftwaffe losses were high amongst their twin-engined Zerstörer units which suffered heavy losses and the Bf 110 and Me 410 Gruppen were decimated.^[5] More worrying for the Jagdwaffe was the loss of 17 per-cent of its pilots—nearly 100 were killed.^[6] In contrast to the raids of the previous year, the US losses were entirely replaceable and being made good as their industrial might ramped up, while the Germans were already hard pressed due to the war in the East. Although not fatal, the Big Week was an extremely worrying development for the Germans.

The actual damage to the German aircraft industry was fairly limited; during 1944 German aircraft industry was to reach its production high, comparable with the U.S and Soviet industries. However the lack of skilled pilots due to an attritional three front war was the factor eroding the capability of the Jagdwaffe.^[7] The Luftwaffe had to abandon its tactic of "maximum defensive effort" to daylight bombing missions in favor of hit-and-run intercepts. While the Jagdwaffe remained formidable, air superiority had passed irrevocably to the Allies.

[edit] Followup

The Big Week raids demonstrated that the Luftwaffe's best anti-bomber weapon, twin-engine designs like the Me 410, were appallingly vulnerable against Allied fighters. They were removed from service in the west, passing the defense role primarily to the higher performance single-engine designs. Due to the effective protection, now offered by Allied fighters, a change of tactics was introduced; the fighters formed up well in front of the bombers, took a single head-on pass through the stream, and then left. This gave the defending fighters little time to react, and even a few shells into the cockpit area could "destroy" a bomber in one pass. In a repeat of earlier RAF strategy, the Luftwaffe also attempted to form up their own version of the "Big Wing", which they hoped would allow them to bring the twins back into combat in the safety of huge number of covering single-engine designs. As had sometimes been the British experience, these formations proved extremely difficult to arrange.

Big Week bolstered the confidence of U.S. strategic bombing crews. Until that time, Allied bombers avoided contact with the Luftwaffe; now, the Americans used any method that would force the Luftwaffe into combat. Implementing this policy, the United States looked toward Berlin. Raiding the German capital, Allied leaders reasoned, would force the Luftwaffe to battle. Consequently, on March 4, the USSTAF launched the first of several attacks against Berlin. Fierce battles raged and resulted in heavy losses for both sides; 69 B-17s were lost but the Luftwaffe lost 160 aircraft. The Allies replaced their losses; the Luftwaffe could not.^[8]

Nevertheless, the new German strategies were proving somewhat effective. The U.S. fighters, kept in close contact with the bombers they were protecting, could not chase down the attacking fighters before they were forced to turn around and return to the bombers. Jimmy Doolittle responded by "freeing" the fighters, allowing them to roam far from the bomber streams and hunt down the German fighters before they could begin to approach the bombers. The effects of this change, although unwelcome to the bomber crews, was immediate and extremely effective. Swarms of Mustangs would attack the German fighters as they were still struggling into the air laden down with their heavy weapons and full fuel tanks, hopelessly outperforming them. When the Germans did manage to avoid the fighters, by concentrating solely on attacking the bombers the U.S. fighter force was allowed to grow in size essentially unmolested. By the end of April, the Luftwaffe was a broken force. With the Luftwaffe a spent force, the hundreds of fighters available to the Allies were now turned loose on German supply lines, railroads, trucks, and practically any other target.

When the combined bomber offensive officially ended on April 1, 1944 and control of the strategic air forces passed to U.S. General Dwight D. Eisenhower, Allied airmen were well on the way to achieving air superiority over all of Europe. While they continued strategic bombing, the AAF turned its attention to the tactical air battle in support of the Normandy invasion.^[8]

[edit] RAF bomber sorties during Big Week

From November 18, 1943 until March 30, the Royal Air Force (RAF) fought the Battle of Berlin (air). RAF Bomber Command organized sixteen major attacks on the German capital. During these sixteen attacks the RAF destroyed over 6,000 acres (24 km²) and lost 450 aircraft. Arthur Harris planned to reduce most of the city to rubble to achieve victory. During the battle of Berlin, the British lost 1,047 bombers, with a further 1,682 damaged, culminating in the disastrous raid on Nuremberg on March 30, 1944. The campaign did not achieve its strategic objective. During "Big Week" RAF night time sorties were:^[9]

19/20 February 1944: 921 sorties, 79 aircraft (8.6 per cent) lost. The major raid, by 823 aircraft, was to Leipzig;
20/21 February: 826 sorties, 10 aircraft (1.2 per cent) lost. The major raid, by 598 aircraft, was to Stuttgart.
21/22 February: 69 sorties, 1 aircraft (1.4 pec cent) lost;
22/23 February: 134 sorties, no aircraft lost;
23/24 February: 22 sorties, no aircraft lost;
24/25 February: 1,070 sorties, 36 aircraft (3.4 per cent) lost. The major raid, by 734 aircraft, was on Schweinfurt home of Germany's main ball-bearing factories. 266 American B-17s had raided the factories the previous day.

[edit] References

Caldwell, Donald & Muller, Richard (2007). The Luftwaffe over Germany - Defense of the Reich; Greenhill books, MBI Publishing; ISBN 978-1-85367-712-0
Hess, William. N. B-17Flying Fortress - Combat and Development History;Motor books;1994; ISBN 0-87938-881-1