All that is true.
However as a student who has read many many WW II history books including the multi volume history by the US Navy, I found the Hansen book to be very difficult
I found the insertion of events thousands of year ago to be a detraction
If you have listened to VDH’s many lectures that are on youtube he constantly draws from history to explain other events or even current events.
It is baked into the cake with him. While it can sometimes be a bit tedious, many of his parallels to other events in history are interesting. I enjoyed his macro view of the war very much though and there are many lessons for our “national defense” that can be inferred.