Chaotic fighting at Hanover’s Center Square quickly spread into side streets, alleys, and fields. At the first sign of trouble, Major John Hammond led an organized withdrawal of the 5th New York Cavalry Regiment from Abbottstown Street/Broadway into the Public Commons along today’s Railroad Street, while Union ambulances and remnants of the 18th Pennsylvania Cavalry Regiment retreated along Abbottstown Street. Along Abbottstown Street/Broadway stand many surviving pre-Civil War buildings identified by numbered brass plaques near their main entrances. Colonel John Hammond recalled that ambulance guard Bradley Alexander was run over by ambulances, suffering injuries from which he later died at his home near Black Creek, N.Y.