I recommend, David O'Keefe, "One Day In August : The Untold Story Behind Canada's Tragedy At Dieppe", Alfred A Knopf Canada, 2013, ISBN 978-0-345-80769-4.
I've met David, and from his other works, I believe this is the better book.
Regarding your comment about the CBC's focus on everything tragic and sad in Canadian history, it has been noticed by others.
https://torontosun.com/opinion/colum...ield-victories Brian Smol has been on a roll lately commenting on matters defence in the press. Maybe he'll replace Gwynne Dyer, who is getting a little long in the tooth in my opinion. I know Scott Taylor too, and I find his analysis too superficial.