While I agree with you on the large scale operations, I do not agree with the Powell Doctrine on small covert actions.
The small scale operations create division in the enemy and must be covert so they tend to blame each other internally and not you as an external enemy to pull their people together and unify against you.
Sun Tzu.... in application
Agreed on small vs. large scale.
For the record, I put Ukraine - Russian War as large scale.