Changing Methods of Warfare by Land, Air and Sea, 1939-45 ยป The Battle of Britain and the Blitz

What you'll learn this session

Study time: 30 minutes

Edexcel spec: Paper 2 Section B, Breadth study B6, Key topic 2

  • Why the Battle of Britain was fought and how radar, fighters and the control system helped Britain win
  • Why the Luftwaffe failed to gain control of the skies in 1940
  • What the Blitz was and what its effects were on British cities and people
  • What changed and what stayed the same in air warfare since 1917

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Why was there a Battle of Britain?

The Changing Nature of Warfare and International Conflict, 1919-2011, is one of eight Paper 2 Section B breadth studies. You study only one of them. This lesson is about two linked campaigns in the air over Britain in 1940-41.

By the end of June 1940 Germany had beaten France. Britain was still fighting. Hitler wanted Britain to make peace, and if it would not, he planned an invasion across the English Channel, code-named Operation Sea Lion. But the Royal Navy was stronger than the German navy. To cross the Channel safely the Germans first had to win air superiority: control of the skies over southern England. That meant destroying the RAF, and the struggle that followed was the Battle of Britain.

Key terms:

  • Air superiority: having so much control of the air that the enemy cannot stop your own planes from operating.
  • Battle of Britain: the air battle of summer and autumn 1940 (usually dated 10 July to 31 October) in which RAF Fighter Command defeated the German air force, the Luftwaffe.
  • Radar: a system that sends out radio waves and uses the echoes to find aircraft that are far away, long before anyone can see or hear them.
  • The Blitz: the German bombing of British cities, mostly at night, from September 1940 to May 1941.
  • Blackout: a rule that all lights had to be hidden at night so that bombers could not see towns.

The two sides

✈️ The Luftwaffe

Germany had more aircraft. Its Messerschmitt Bf 109 fighters escorted bombers such as the Heinkel 111 and Dornier 17, and Stuka dive-bombers. But the Bf 109s could stay over England for only a short time because they had to return across the Channel for fuel.

🛡️ RAF Fighter Command

Led by Air Chief Marshal Hugh Dowding. Its main fighters were the Hawker Hurricane and the Supermarine Spitfire. The Hurricane was more numerous and shot down more German aircraft; the Spitfire was faster and more agile. Pilots came from Britain and from other countries, including Poland, Czechoslovakia and Canada.

How Britain won the Battle of Britain

The Germans began by attacking shipping in the Channel in July. In August they widened their attacks to RAF airfields, aircraft factories and radar stations. They launched their main assault, called Adlertag ("Eagle Day"), on 13 August. The RAF lost many aircraft and pilots, but the Germans lost more. On 15 September, now remembered as Battle of Britain Day, large German formations were met by fighters again and again. Two days later Hitler postponed Sea Lion. The invasion never happened.

Several things explain why Britain held on:

  • Radar. A chain of radar stations along the south and east coasts could spot German aircraft as they formed up over France and the Channel. The Royal Observer Corps, volunteers who watched and listened, tracked them once they were over land.
  • The control system. Dowding built a system that joined the parts together. Reports from radar and observers went to Fighter Command headquarters, were sorted, passed to the group headquarters and then to the sector stations, which ordered squadrons into the air by radio. The RAF could send fighters only where they were needed and did not waste fuel and pilots on standing patrols.
  • Fighting over home ground. RAF pilots who bailed out over Britain could fight again. German airmen who did so were captured. The Bf 109s had little fuel to spare for combat.
  • German mistakes. The Luftwaffe never concentrated for long on knocking out radar and airfields. The Stuka was slow and easily shot down, and was withdrawn from the battle. On 7 September the Germans changed their targets to London and other cities. This gave the RAF's damaged airfields time to recover.

On 20 August 1940 the prime minister, Winston Churchill, told the House of Commons: "Never in the field of human conflict was so much owed by so many to so few." He was talking about the RAF pilots.

The Blitz, 1940-41

The Blitz began on 7 September 1940, when the Luftwaffe attacked London. Daylight raids became too costly, so it turned more and more to night bombing. London was bombed on 57 nights in a row. Then the bombers hit other cities and ports, including Coventry (14 November 1940), Birmingham, Liverpool, Glasgow, Belfast, Plymouth and Hull. The heaviest raid on London came on 10-11 May 1941, and after that most German bombers were sent east for the invasion of the Soviet Union.

The German aims were to break British morale, damage ports and factories, and force Britain to ask for peace. Night raids were safer for the bombers, because the RAF had few night fighters then. But bombing at night was very inaccurate, and many bombs hit homes rather than factories.

The effects of the Blitz:

  • Loss of life and homes. About 43,000 civilians were killed in Britain during the Blitz, around half of them in London. Large areas of London, Coventry and other cities were destroyed, and many people lost their homes.
  • Changes to daily life. There was a nightly blackout. Families used Anderson shelters in the garden, and many Londoners slept in Underground stations. More children were evacuated to the countryside, adding to the evacuations that began in 1939.
  • Morale. The aim of breaking morale failed. People were shocked and tired, but Britain did not ask for peace, and war production continued.

The bombing did not win the war for Germany, and it also meant that German aircraft that might have supported other fronts were used over Britain.

Change and continuity in air warfare

What changed: in 1917 German Gotha bombers raided London, but the raids were small and the aircraft were slow. By 1940 thousands of aircraft fought over Britain. Radar and a radio control system, linked together, changed defence, so that in the Battle of Britain the bomber did not "always get through", as Stanley Baldwin had said in 1932 that many feared. Whole cities, not just fronts, were attacked.

What stayed the same: bombing civilians still failed to break a country's will, as it had in 1917. Air power alone could not win the war without control of the skies.

Common mistakes

  • Mixing up the two campaigns. The Battle of Britain was a fight between fighters in the day, mostly over south-east England. The Blitz was the bombing of cities, mainly at night.
  • Saying radar won the battle on its own. It worked because it was joined to observers, the control system, radio and good fighters.
  • Saying the Blitz broke British morale or that it ended with the Battle of Britain. It carried on until May 1941.

Exam-style question

Explain TWO causes of the failure of the Luftwaffe to win the Battle of Britain in 1940. [8 marks]

Model answer

One cause was Britain's radar and control system. A chain of radar stations along the coast spotted German aircraft as they gathered over France, and the Royal Observer Corps tracked them over land. Reports went to Fighter Command, which ordered squadrons by radio to the right place. This meant the RAF had fighters in the air at the right time without wasting fuel and pilots, so the Luftwaffe met strong opposition every time it came and could not destroy Fighter Command.

A second cause was German mistakes in how they fought the battle. In August the Luftwaffe attacked airfields and radar stations, and Fighter Command was under real strain. But on 7 September the Germans switched to bombing London. This gave the RAF time to repair its airfields and replace aircraft. The Stuka dive-bombers were also too slow and were shot down in large numbers. Because the Luftwaffe had not gained air superiority, Hitler postponed Operation Sea Lion on 17 September. These mistakes therefore led directly to its failure.

What lifts it to the top level: each cause has precise facts and shows how it led to the failure.

Exam tip

Give two different causes, each with its own paragraph, and end each one by saying how the cause led to the Luftwaffe's failure. A single cause, however good, cannot score more than 4 out of 8.

Recap

  • The Battle of Britain (July-October 1940) was fought because Germany needed air superiority before it could invade.
  • Britain won thanks to radar, the Observer Corps, Dowding's control system, the Hurricane and Spitfire, and German mistakes.
  • The Blitz (September 1940-May 1941) was night bombing of British cities. It killed and made homeless many civilians but did not break British morale.
  • Air warfare had changed greatly since 1917, but bombing civilians still failed to force surrender.
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