He learned their partnership in the Sacred Band.
Somebody the Sacred Band hadn't treated with softest gloves.
The horsemen surrounded him and he recognized two of the men as members of the Sacred Band.
Units include the war elephant and the Sacred Band.
"What does the Sacred Band want with your people?"
As for the Sacred Band itself, the attachment to Manpower is natural enough.
Or any other member of the Sacred Band.
"I mean, did you not help to form the Sacred Band?"
Plutarch suggests that all 300 of the Sacred Band were killed at the battle, having previously been seen as invincible.
The original position of the Sacred Band being led by Pelopidas is unknown.