I knew I had a book on camouflage but it took me ages to find it!
This pre-owned 113 page volume gives a history of concealment and deception in war.
Full of facts, photos and details of research, trial and error, practicality, practice and perfection. Price includes postage. Same thing on Ebay for £11.45 including postage. Yours for just £6.95 including postage.