Think about it....we bombed our allies and never invaded the enemy's country.
Westmoreland's strategy was Attrition....we killed more of them than the killed of us and in time they would quit and we could go home. On my second tour...I was privileged to be invited into the Battalion Briefing Room...where on the Wall I saw a Score Board....showing the Stats...."Them" and "Us". Very quickly I came to the realization at some point I could figure in those numbers if I kept returning to the game.
Abrams was about Logistics...and understood the NVA operated in reverse of the US Military. We brought supplies up behind us to support Operations where the NVA had to pre-position their supplies ahead of their troops in anticipation of Operations as we controlled the Air and Ground resupply routes.
The Cambodia Incursion yielded almost two years of very low paced Operations in the Three Corps Area as we disrupted their logistical operation.