Well "
BS not Truth" it's clear you know very little to nothing of military or tactics, or history.
As one who has studied Military History and Methods for over 50 years it becomes clear that Strategy and Tactics have remained fundamentally the same since the start of warfare, usually only slight adjustment and/or variation based on tech advance and weaponry changes.
Sun Tzu's "The Art of War" remains as valid now as it did c. 500 BC +/-.
en.wikipedia.org
However, if you actually understood my post, you'd realize that the bulk of it addressed an oft overlooked and/or lightly considered aspect of Military skill and art, Logistics.
....
1. The aspect of military operations that deals with the procurement, distribution, maintenance, and replacement of materiel and personnel.
2. The management of the details of an operation.
....
The American Heritage Dictionary entry: logistics
ahdictionary.com
OR;
As for "still living in the mid 1980s", not sure how you came to this conclusion unless this is a bit of projection on your own small and limited knowledge and understanding of the subject.