Ten thousand at his feet — That is, who followed him; possibly he intimates that they were all foot — men; and so this is emphatically added, to signify by what contemptible means God overthrew Sisera's great host.
Related Commentaries of Judges 4:10
Judges 4:10
10 And Barak called Zebulun and Naphtali to Kedesh; and he went up with ten thousand men at his feet: and Deborah went up with him.