Of them that dwelt in tents, i.e. of the Arabians; so fetching a compass, and falling upon them where they least expected it. Nobah and Jogbehah; of which cities see Numbers 32:35,42. The host was secure; being now got safe over Jordan, and a great way from the place of battle; and, probably, supposing Gideon's men, to be so tired with their hard service, and the great slaughter which they had made, that they would have neither strength nor will to pursue them so far.
Related Commentaries of Judges 8:11
Judges 8:11
11 And Gideon went up by the way of them that dwelt in tents on the east of Nobah and Jogbehah, and smote the host: for the host was secure.