answer: Read
Explanation: But to Germany's surprise, Britain, although apparently defeated and certainly painfully exposed and isolated, did not surrender. It did not even seek to come to terms with Germany.
I have decided to begin to prepare for, and if necessary to carry out, an invasion of England...
This was a puzzling state of affairs for the Germans who now had two options: to lay siege to Britain and to wear it down physically and psychologically through limited military action and through political and propaganda warfare, which would include the threat or bluff of invasion; or to actually invade.
Both these options demanded that preparations for invasion be launched, whether a real or bluff invasion only time would tell.
So, on 16 July 1940 Adolf Hitler issued Directive Number 16. It read, 'As England, in spite of the hopelessness of her military position, has so far shown herself unwilling to come to any compromise, I have decided to begin to prepare for, and if necessary to carry out, an invasion of England... and if necessary the island will be occupied.'
The Germans, surprised by the speed of their military success in Europe, had no detailed plans for an invasion of Britain with the man made responsible for the venture, General Franz Halder, now having to start from scratch.