This book consists of two volumes, both written after the war by German Officers who were intimately involved in the subject, and who were recruited by the US Air Force to commit their memoirs and recollections to paper for future historical study. This is the first time these papers have been available in print outside the United States. This is a detailed account of Luftwaffe plans for its participation in the proposed invasion of England in 1940 - Operation Sealion. The role of the Luftwaffe was partly support for naval and land forces and partly interdiction and air combat against the Royal Air Force. The book gives a full account of how the Luftwaffe intended to carry out its tasks. It also looks at the military-political developments during the second half of 1940 and the postponement of the operation. There is in addition a critique of the operation itself and comments on the problems of the military command. An interesting picture of what might have been.