One more reason was because of the weak British air defenses. In 1938, just before Munich, General Ismay advised that Prime Minister Chamberlain on the advantages of not fighting Germany just yet, as they need more time to make a stronger air defense.
The long-term factors were that by 1919, the Royal Navy and the English Channel were not adequate enough to protect the whole of Great Britain. If any country had managed to take over the whole of the European continent it could pose an enormous threat against Britain. Since the possibility of being attacked from the air grew greater with the development of the bombers, the Government decided to start up the Royal Air Force. This was set up in 1922 and in it would be a system of ground defenses and an air strike force of 20 squadrons. Nevertheless, however strong the RAF was, it would not be able to defend the South East of Britain in a potential attack from the air. The RAF was not a good enough defender of Britain and couldn’t be relied upon so Britain had to consider evacuation as a strategy.
The medium term factors were that by the 1930’s Britain’s air defense system was not going too well, due to cutbacks caused by the depression and Britain was at a major disadvantage with Germany. British targets were closer together than German cities and were therefore easier aims for German bombers in a future war.
By 1936, it was estimated that Germany could drop 600 tons of bombs a day, which would result in masses of casualties during the first week. All of this had gone up by 1939 as Germany’s air strength increased the amount and weight of bombs that could be dropped. The new amount, 700 tons was said to have been able to deliver a knock out blow. This would produce huge devastation in England’s areas and populous cities. With all of this estimated by Britain’s top people, the Government began to worry. Britain could become helpless within a matter of weeks.
This was another reason for the evacuation. With the huge amount of killing emergencies it would be safer if Britain’s children, expectant mothers and helpless people were safely in the reception areas.
The short-term factors were that by 1938 fighter command had 29 squadrons and only five of them were equipped with new bombers called ‘Hurricanes’. Britain’s ground defenses were not ready and the air force could only rely on 100 tons of bombs per day. The weak air defenses led to General Ismay directing Prime Minister Chamberlain, before he left for Munich, on the advantages of not fighting Germany. He needed more time to set up a better defense especially because the air force could only rely on 100 tons a day when it was estimated to be a lot more.
If they spent another year on improving the air force it would possibly prevent Germany from making a quick attempt at winning the war with Britain from the air. Ismay was right when the war was only won by a narrow margin two years later when the air force had more strength. This was a cause for evacuation because the air defenses were not strong enough to protect the people of Britain. It was only two years later when the defense system became 10 times stronger.
In conclusion to this essay the need and cause for evacuation points to the air force. They were not strong enough to protect Britain during the early stages of war. They lacked money for new bomber planes probably because of the Wall Street crash in the earlier years. Another reason was the very populated cities this meant much easier targets for German bombers.