Twenty years ago [1963] I published a book about the origins of the Second World War. At the time it was dismissed as wrong-headed and controversial. Now it has become the accepted version for most people. But there still lurks some trouble in the book, particularly the so-called Hossbach Protocol. I asserted that this document was a forgery, an assertion which caused much indignation. Now after many years a Berlin lawyer called Dankwart Kluge has taken another look at the Hossbach Protocol. His conclusions are startling. The Hossbach Protocol never existed as a formal document. Indeed it probably never existed in any form. Two documents were submitted to the Nuremberg Tribunal: one was an English translation, markedly longer than the alleged Protocol, the other a microfilm copy of a microfilm. However, the Tribunal accepted these documents. They were held to prove that Hitler was planning an aggressive war. On the strength of them, Goering was condemned to death and only escaped the hangman by taking poison. No evidence that Hitler planned aggressive war has ever been produced. Hossbach, who is alleged to have compiled the so-called protocol, was from the first an associate of the German generals who opposed Hitler’s policy or tried to. (my emphasis)

https://www.lrb.co.uk/the-paper/v05/n22/a.j.p.-taylor/diary

See also a 1984 analysis http://www.ihr.org/jhr/v04/v04p372_Weber.html