What happened September 1938 AD

From September 1938, Turing had been working part-time with the Government Code and Cypher School (GC&CS), the British codebreaking organisation. He concentrated on cryptanalysis of the Enigma with Dilly Knox, a senior GC&CS codebreaker.

Between October 1933 and September 1938, the four volumes of Marlborough: His Life and Times were published.

On 29 September Hitler, Neville Chamberlain, Édouard Daladier, and Mussolini attended a one-day conference in Munich that led to the Munich Agreement, which handed over the Sudetenland districts to Germany.

On 30 September, Chamberlain signed up to the Munich Agreement, agreeing to allow German annexation of the Sudetenland.

Hitler began pressing German claims on the Sudetenland, an area of Czechoslovakia with a predominantly ethnic German population. Soon the United Kingdom and France followed the appeasement policy of British Prime Minister Neville Chamberlain and conceded this territory to Germany in the Munich Agreement, which was made against the wishes of the Czechoslovak government, in exchange for a promise of no further territorial demands.