USMC counter-drone SOP (infantry formation focused)

It’s not official doctrine, but at the rate HQ USMC spits out any doctrine at all, it’s better than nothing.

The bulk of the camouflage techniques are old hat, but the immediate action drills are new ideas. The main author developed content after involvement in counter-UAS training and exercises. The website where it was published has always been on the leading edge of small unit tactics, techniques and procedures.

(96-page content) Camouflage SOP 200630.pdf
I had an article published in the October 1987 Marine Corps Gazette entitled, "Countering RPVS-A New Threat." I think I have a copy lying around somewhere.