They don't have DISCIPLINE.
They don't have armor.
Game of Thrones Season 1, Episode 5
No DISCIPLINE. No training.
Game of Thrones Season 4, Episode 9
Perhaps you need more scribing work
to DISCIPLINE your mind.
Game of Thrones Season 7, Episode 5
When soldiers lack DISCIPLINE,
the fault lies with their commander.
Game of Thrones Season 1, Episode 9
You don't have the DISCIPLINE.
Game of Thrones Season 3, Episode 7