Menachem:
You can’t compare the legitimate kingdom of Dovid HaMelech with the “band of thugs that descended there”, to quote the Brisker Rav.
I quoted the Brisker Rav that the “hishtadlus”/”metzius” argument of the soldiers accomplishing anything for Klal Yisrael is false. It is only Hashem Who saves and through the merit of those who learn. Comparing to Dovid HaMelech’s army is silly and a non-starter.