The quotes from Halder's diary got me interested in who this man was. Found this tidbit of info about him.
http://ww2db.com/person_bio.php?person_id=A228Throughout his career, Franz Halder kept a diary rich in detail, noting not only the chronology of events but also the observed emotions of the main decision makers in Germany and other trivia that were otherwise not recorded on official documents. After the war, he cooperated with historians in constructing a view of the war through German eyes, acting as an adviser to the US Army Historical Division in the 1950s. US President John Kennedy would later award him the Medal of Freedom for his contributions in history. He passed away in 1972. His memoirs, The Halder Diaries, was published in 1976