Former Special Forces guy covers the 4man Close Quarters Battle (CQB) tactic of 1 and 2man clearing corners first, during room entry. How it is flawed and based not on sound CQB principles but instead, based off Hostage Rescue. Why this is so, and go over some lessons learned, and how these lessons keep being forgotten with regards to CQB.
My website
https://www.moderntacticalshooting.com/