Serious question amongst the banter and sandbags - what it is about the military environment which produces absolute shocking instructors?
I can only think of 2 off the top of my head who were worth their salt: one knew his stuff inside out and could get it across in a way that encouraged the students, the other whilst not as technically brilliant looked out for the students and tried to bring them on as individuals and officers in general. As for the rest, there are some, dating back to IOT, that I frankly wouldn't pee on if they were on fire they were that bad - both as individuals and instructors.
Is it the alpha military environment that breads bad instructors, or is it / was it a case of bad individuals either 'escaping' to the training system before they were found out, or having been found out, being sent to the training system because there was no other option?