The 21 Foot Rule

Seven troops in a platoon attacked by seven viat kong, all within 21 feet, essentially turns into a successful ambush and seven dead us. And then the v c would rush with knives and bayonets. They would rush the troops that are on patrol. Now you can't really make them move too far, because they're walking through dense jungle. So if you try to get them to scatter or run, then they're ging to be tripping over branches and tripping over logs and whatever else might be in the jungle floor. That was the finding that came out of ianam. The question became, what do we do about this 21 foot rule?"