I'll post this again since it wasn't deemed a notable but now seems relevant…

https://en.m.wikipedia.org/wiki/Ghost_Army

23rd Headquarters Special Troops (Operation Quicksilver)

Tasked with deception missions in WW2 days/weeks before D-Day.

GHOST Army. 23.

Baker Notable

>>1721031

https://www.theatlantic.com/technology/archive/2013/05/ghost-army-the-inflatable-tanks-that-fooled-hitler/276137/

>>1721087

Might be worth looking into. Wouldn't be the first time Q Team referenced a book.