Moses
Deuteronomy 1:15BSB·traditional attribution

So I took the leaders of your tribes, wise and respected men, and appointed them as leaders over you—as commanders of thousands, of hundreds, of fifties, and of tens, and as officers for your tribes.

Matthew Henry Presbyterian @wholebiblehenry

Moses here reminds them of the happy constitution of their government, which was such as might make them all safe and easy if it was not their own fault. When good laws were given them good men were entrusted with the execution of them, which, as it was an instance of God's goodness to them, so it was of the care of Moses concerning them...

Commenting on Deuteronomy 1:9-18

John Gill Reformed Baptist @doctorgill

So I took the chief of your tribes, wise men, and known,.... The principal persons among them, that were remarkable and well known for their wisdom and understanding, whom the people presented to him: and made them heads over you; rulers of them, as follows: captains over thousands, and captains over hundreds, and captains over fifties, and captains over tens; see Exo 18:21.

Geneva Bible Notes Reformed @genevanotes

So I took the chief of your tribes, wise men, and known, and made them heads over you, captains over thousands, and captains over hundreds, and captains over fifties, and captains over tens, and officers among your tribes. (l) Declaring what sort of men ought to have a public charge, read .