Nervii near Sabis, Labienus, commanding the 9th and 10th legions, defeated the opposing Atrebates force and proceeded to take the enemy camp. From there he sent the 10th Legion against the rear of the Nervii line while they were engaged with the rest of Caesar's army, single-handedly turning the tide of battle and securing Caesar the victory.

Labienus is also credited with the defeat of the Treviri under Indutiomarus.