Below is a link to the full text of FM21-103 as updated from Mar 12th, 1941.
https://archive.org/stream/KurtSaxonThePoorMansJamesBondVol5.pdf/Kurt%20Saxon%20-%20The%20Poor%20Mans%20James%20Bond%20-%20Vol%204#page/n43/mode/2up
This is the information that soldiers used, and acquired, in WWII.
With WWIII ongoing, any preparation you do know can only help.
At the end of the manual is a checklist you can tl;dr.
This is how you win in court for less!
Have a perfectly peaceful day!
Keep working, stop paying.