https://wyomingsurvival.org/2026/04/06/ground-reconnaissance-operations-pdf/
https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN45113-TC_3-21.76-000-WEB-2.pdf
IMPORTANT: If/when power goes Tango Uniform, you will be happier if, in the last few days of sorta-peace, you took the time to make hard copy of each book. YMMV.