וַיָּ֣הָם יְ֠הוָה אֶת־סִֽיסְרָ֨א וְאֶת־כָּל־הָרֶ֧כֶב וְאֶת־כָּל־הַֽמַּחֲנֶ֛ה לְפִי־חֶ֖רֶב לִפְנֵ֣י בָרָ֑ק וַיֵּ֧רֶד סִֽיסְרָ֛א מֵעַ֥ל הַמֶּרְכָּבָ֖ה וַיָּ֥נָס בְּרַגְלָֽיו׃
And the LORD discomfited Sisera, and all his chariots, and all his host, with the edge of the sword before Barak; and Sisera alighted from his chariot, and fled away on his feet.
Metzudat David on Judges
With the edge of the sword: To be killed by the sharpness of the sword.
Metzudat David on Judges
On foot: So that one of the Children of Israel not recognize him and catch him.