On September 16, while on patrol west of Philadelphia, Pulaski spotted significant British forces moving toward the Continental position. Upon being informed by Pulaski, Washington prepared for a battle, but the encounter was interrupted by a major storm before either side was organized. On October 4, Pulaski took part in the Battle of Germantown. He spent the winter of 1777 to 1778 with most of the army at Valley Forge. Pulaski argued that the military operations should continue through the winter, but this idea was rejected by the general staff. In turn, he directed his efforts towards reorganizing the cavalry force, mostly stationed in Trenton. While at Trenton his assistance was requested by General Anthony Wayne, whom Washington had dispatched on a foraging expedition into southern New Jersey. Wayne was in danger of encountering a much larger British force sent to oppose his movements. Pulaski and 50 cavalry rode south to Burlington, where they skirmished with British sentries on February 28. After this minor encounter the British commander, Lieutenant Colonel Thomas Stirling, was apparently convinced that he was facing a much larger force than expected, and prepared to withdraw his troops across the Delaware River into Pennsylvania at Cooper's Ferry (present-day Gloucester City). Pulaski and Wayne joined forces to attack Stirling's position on February 29 while he awaited suitable weather conditions to cross. In the resulting skirmish (which only involved a few hundred men out of the larger forces on either side), Pulaski's horse was shot out from under him and a few of his cavalry were wounded.