The great secret was out.
American soldiers came up to the Ebermannstadt station with the news, which did not surprise Alan.
He had known of the possibility before the war, and was good at picking up straws in the wind.
After his return from America, he had posed both to Jack Good and to Shaun Wylie a question about a chain reaction, expressed in terms of barrels of gunpowder.
He had also spoken of a possible 'U-bomb' at Hanslope lunchtimes.
He gave a talk on the basic physical principle to the others at Ebermannstadt.
He remained in Germany until about the middle of August, and then returned to write his report on the visit.
After six years, the war was officially finished.
No longer responsible for the world, they could get things right at home.
In this respect Alan Turing was as fortunate as anyone.
Even if his work had often been wasted, he had made the most of the war for himself, and emerged ready to contribute to the peace.
The British had avoided defeat, and owed America for that.
The ending of Lend-Lease was only the beginning of new problems.
The power of British capital had shrunk, and its empire was to melt away. Yet arising in the mind were seeds of other kinds of growth.