[matthewmorgan]

Whereas bagging on a dead war hero due to something you read in a book is highly creditable behaviour

[kitd]

Mackintyre is a professional historian whose work is based on first hand accounts so I think it can be taken as fact that many found him unpleasant.

I found it interesting & surprising to read of his character, having (possibly like you) only known of him as a war hero, and thought it worth mentioning, that's all.

So no need for vicarious outrage. As you say, he's long gone.