When I finished Champagne Navy, a relatively easy read, I opened The LAST DAYS of HITLER by H. R. Trevor-Roper, a writer inspired to work on such a project by a 'brigadier commanding the Intelligence Bureau at the time when Hitler's death was still a mystery', i.e., September 1945.
Link here to a short Wikipedia bio re Hugh Trevor-Roper.
2014 is the 100th Anniversary of the outbreak of WW1 and the 75th Anniversary of the outbreak of WW2. The book reveals some information concerning links between the two wars and much information about Hitler's diabolical schemes and aides inside his power circle.
While reading the book in a public place a person looked over at, recognized the topic and turned away with a grunt, as if the book was contaminated. I didn't bother explaining the many reasons for my interest in WW2, it significant characters, causes and affects at the time or the various ways it has a grip on the modern, civilized world (if we are, in fact, truly modern and civilized at all). But I found the person's reaction instructive, almost 70 years after Hitler's death.
Link to WW2 Recommended Reading