 During one of these sorties Robert Redhead a sutler had captured two very important Spanish prisoners; Cosimo d'Alexandrini and Pedro de Lugo a Commissary of the artillery.They had been captured not far from the North Fort by an English scouting party, Redhead was looking for items to sell to the troops inside when he stumbled across the Spanish officers checking the strength of the walls.The North Fort was a strong fortress which secured the entrance to Bergen op Zoom from the Scheldt on the north-east side.