BTW, for those who haven't read it, one of the most chilling books on war is "The Last Days of Hitler" (https://press.uchicago.edu/ucp/books/book/chicago/L/bo362699...) which is a carefully researched (if imperfect) chronicle of ... well, the last days of hitler. With US and Russia approaching Berlin on two sides, and no hope whatsoever, Hitler commanded over a near-impenetrable bunker and refused to surrender. By the end, the US retreated and lets Russia do the last work, and german units fought westward to surrender to the US.

The other enlightening book is https://en.wikipedia.org/wiki/Stalingrad_(Beevor_book) which shows just how truly absurd the war between Germany and Russia was and how megalomaniacal the leaders of those countries were.