 Plutarch does indeed describe Pelopidas leading the Band and catching the Spartans in disorder, but there is nothing in his account that conveys anything other than the Sacred Band being the head of the column, and the Spartans were disordered not because they were taken in the flank but because they were caught in mid-maneuver, extending their line.Seeing their right wing beaten, the rest of the Peloponnesians, who were essentially unwilling participants, retired and left the enemy in possession of the field.The arrival of a Thessalian army under Jason of Pherae persuaded a relieving Spartan force under Archidamus not to heap folly on folly and to withdraw instead, while the Thebans were persuaded not to continue the attack on the surviving Spartans.