Telling the story of WWI through the paranormal isn't a new idea (though certainly not mainstream). What sets this book apart is the methodical rigor of its documentation — and "rigor" isn't too strong a word.
Every episode is backed by period sources: the author doesn't ask you to believe, only to examine the evidence.
The book has its limitations, but they're largely intentional and will land differently depending on the reader. Some sections turn into dense catalogs of sightings — date, location, witness, source — and the pace slows considerably. It's not always a quick read.
The ending, without spoilers, is remarkable.
Recommended for those who love history, deep documentation, and of course the paranormal. Less suited for readers looking for linear narrative or a brisk pace — but as I said, that's a deliberate choice.
This book doesn't want to be read by many. It wants to be read by the right ones.