... i've heard this during a Karate lesson in BKKK from a Sensei (Martial Arts Teacher).
Trained participants fight their combats in Mind, then Body follows - as in a game of 'Chess'.
... had insights that best use Mind & Mantras to make decisions & attack opponent ... then trained body follows with maneuvers or maneuver series.
... had insights that Mantras can also be used attack Chakras of Opponents, then Body or Speech (Kiai) does that as well.
... i'll call this method, when combined with acute situation awareness: Combat Mind.
(Mantra is 'Protecting sound', any sound can be Mantra. Mantras can be spoken aloud or quietly, in Mind).
See also, if You wish or need, ... : Mudras & Chakras, Holy Way, Is Kiai important?.