 In May 1777 , Hazen 's regiment was ordered to join the main army at Princeton , where it was active in the Philadelphia campaign as part of John Sullivan 's brigade . Some of Hazen 's companies ( but not Hazen himself ) participated in the Battle of Staten Island ; in this action , Antill was captured . Hazen 's command during the Battle of Brandywine included the northern ( right ) end of the American line ; this position was one of those flanked by the British in their attack . Hazen made an early report indicating the presence of British troops on the American flank that turned out to be the main British thrust . His report was dismissed by General Sullivan , who wrote , after receiving other reports , that " Colo . Hazen 's Information must be wrong . " To Sullivan 's detriment , the other reports were wrong , and Hazen 's was correct ; the British flanking maneuver was instrumental in the American loss of the battle . Hazen 's regiment lost 4 officers and 73 men in the battle . In the Battle of Germantown , Hazen commanded a brigade that included in addition to his own regiment , the 2nd , 4th , and 6th Maryland Regiments . They formed part of Sullivan 's column when it marched on the town ; his regiment lost 3 officers and 19 men in the engagement . 
