command, is there a such thing as a dissenting opinion within the third reich? were there people saying this is folly? >> absolutely. there were generals far superior to hitler in strategic thought and these people were listening to in the hitlers' headquarters because we actually have the transcripts of every word said from january 1942 on-wards yet hitler went and did precisely what he originally decided at the beginning of every meeting he was going to. >> this book looks back on world war ii and what might have happened had different decisions been made. why did you write this book? >> it's a comprehensive history of the war from invasion of poland to the surrender of japan. i wrote it because i have been studying the subject for 20 years and wanted to bring it all together in a single volume and