i aint buying it !!! i guarantee u 99% percent of people say they can do something because they "read a book on it"
I guarantee you that when things go egg shaped, performance will count, not mouth music. If you say you can, you will perform. Or not.
Knowledge is not not competence. The acquisition of relevant knowledge and the successful practical application of the necessary knowledge, skills and values so gained usually (but not necessarily in all cases) leads to competence. Book learning should not be discounted....most soldiers, surgeons, and the practitioners of many other trades and professions owe aspects of their competency to the foundational basics learned from books....the US army invests heavily in doctrinal and training manuals. Many guys aren't natural tinkerers or auto mechanics, but will tackle maintenance tasks holding a workshop manual in their greasy hands. Those that can't back up their claims with actual competency will be called out when crunch time comes. It would be best to confirm what competencies they claim to have by test and exercise....particularly those competencies essential to your survival...rather than when the excreta is striking the fan blades.
The average soldier knows how to soldier; leaders are required to study historical battles. Combat is the exception, as education is passed over for those who get it done. Training is a more complex subject; I cannot see a bunch of friends practicing an "Aussie Peel" without drawing serious scrutiny by whomever that might be.
It is a move and shoot drill to break contact, not initiate it. Supposedly, it dates back to WWII when British commando teams raided coastal villages.