During this campaign, Kościuszko was placed in command of building bateaux, siting the location for camps, scouting river crossings, fortifying positions, and developing intelligence contacts. Many of his contributions were instrumental in preventing the destruction of the Southern Army. This was especially so during the "Race to the Dan", when British General Charles Cornwallis chased Greene across of rough backcountry in January and February 1781. Thanks largely to a combination of Greene's tactics, and Kościuszko's bateaux, and accurate scouting of the rivers ahead of the main body, the Continentals safely crossed each river, including the Yadkin and the Dan. Cornwallis, having no boats, and finding no way to cross the swollen Dan, abandoned the chase and withdrew into North Carolina. The Continentals regrouped south of Halifax, Virginia, where Kościuszko had earlier, at Greene's request, established a fortified depot.