Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
给定下面提供的英文文章，生成不超过5句能正确归纳表述文章含义的中文摘要性句子。

### Input:
By . NAME_1 for MailOnline . Historian NAME_2 believes that NAME_3 chief NAME_4, pictured, wanted the German invasion to fail . Germany sent 12 Nazi spies to Britain in September 1940 to gather information ahead of NAME_5's planned invasion. But most of the agents who arrived as part of Operation NAME_6 were arrested without having come close to completing their mission 'because of their own stupidity', according to official records. One was arrested when he tried to order cider at 10am - not knowing that he could not be served before lunchtime during the war - while another two were spotted cycling on the wrong side of the road. Their cover was blown when police officers discovered Nivea hand cream and German sausages in their bags. The reason why Germany, known for meticulously-prepared spies, sent such incompetent agents on one of the most important missions of the second world war has remained a mystery. Now historian NAME_2 suggests that the botched mission, part of Operation Sealion - the code name given to Germany's plan to invade - was not a sign of German ineptness but an act of sabotage by anti-NAME_5 officials. In her book Operation Sealion: Resistance inside the Secret Service, published this summer, NAME_7 traces the mission to a circle of people around NAME_4, the officer in charge of the Hamburg intelligence unit - one of Nazi Germany's top secret service posts. NAME_8 had close ties to spy chief NAME_9 and to the NAME_10 group which planned to assassinate NAME_5 in July 1944. MI5 described NAME_8 and his group as 'good Germans, but bad Nazis'. NAME_7 told the Guardian that she believes the spy chief had . deliberately sent the agents - many of whom were not fluent in English - . because he feared that Operation Sealion was badly planned and that it . could cost German lives and resources. German amphibious tanks are prepared for Operation Sealion, the 1940 plan to invade Britain that NAME_7 believes was deliberately sabotaged . Amphibious tanks are prepared for Operation Sealion. Historian NAME_2 argues that NAME_4 thought that the mission was badly planned . The reason why Germany, known for meticulously-prepared spies, sent such incompetent agents on one of the most impor Do not say the word "name_7" in the response
user