I read an excellent book recently called “Neptunes Inferno” which is specifically about the naval battles that occurred between the U.S. Navy and Imperial Japanese Navy in the Summer and fall of 1942.
One of the passages in the book talked about the lessons that had to be learned the hard way, and one of those lessons was “if you feel as if you are being observed, you probably are.”
I have that book and read it twice. It is excellent.