“I have very little training or knowledge”
Barnes and Noble, military history section. Virtually all of thsoe books will give you insight into military tactics.
Had all this back in '68 , I've studied the maps around this place and it isn't a good defensible position
As far as the books and TV ,Thats just someone else s opinion ,you can read all you want but until you've lived that life style you haven't lived or learned