Colonel,
I did not mean to come across as impatient for information and I very much appreciate your detailed response to my questions. I realize that digesting new information is an on-going effort for you also, and certainly didn't mean to put you in a spot. I just didn't want to miss out on any insights that are already obvious to you; hence the probing.
I understand much better now the value of attacking the RIGHT battalion, not just ANY battalion! In fact, I ought to have known this already, because in the 1962 war, 7th Bde HQ was captured and 4 Div was in shambles precisely for these reasons - although that was due to terrible political interference in our deployment than to good PLA staff work. From now on, I'l just think of the Div-Battn. engagement as destroying the enemy Div. HQ - until the next revision of the WZC analysis

.
Also, your illustration of the front vs. reserves ratio corrected my earlier fixation with having sufficient reserves - at the expense of adequate front-line troops in the fight! So, thank you once again.