That book it's titled The War Magician and it was written by David Fisher.It old enough to be in public domain so here is text:
https://epdf.pub/david-fisher-the-war-magiciana759b38caa149ec6bdaad58357d30ac925975.html
Amazon.ca has it in new shiny print and book was published so often it should be easy to find.I have my old paperback somewhere found in good old Salvation Army store.
I downloaded that pdf. That is the book I recall. It is an excellent story and history of the desert war.
I have had occasion to use some of the "magic" techniques he described. Very effective.
Yes, he was part of a major Allied victory that involved fooling the Germans about where the Allied armour was stationed.