 These initial sweeps proved unproductive, and by October the unit was looking for a new mission.So, when troops of the 25th Division uncovered a large rice cache in the Saigon River corridor about 30km southeast of Tây Ninh City, Weyand sent some of de Saussure's forces farther east in search of other stockpiles.On 19 October de Saussure moved one of his battalions to Dầu Tiếng District on the northern edge of the corridor; and had it begin to scour the area, which varied from low, flat terrain and cultivated fields to scrub brush and thick jungle.