Deuteronomy 3:18

And I commanded you Themwould be more natural, which some read; retain you, a symptom of the want of absolute preciseness in the writer's style.

armed It is doubtful whether that is the original meaning of the Heb. word or with loins girt, or strippedof superfluous clothing, expeditus; the same word in Numbers 32:21 ff. (JE?): P also uses it but with a following noun id.27, 29 and Joshua 4:13.

children of Israel Not deuteronomic. See on Deuteronomy 4:44.

all the men of valour Heb. sons of strength or valour. Like our forcethe Heb. ḥailis also used for army, but with the article (e.g. 2 Samuel 24:2), which does not occur in this phrase. The meaning is all capable of bearing arms.