Xīn lái de zhǎngguān zhěng chì duìwu, chóngjiàn le jìlǜ.
The new commander set the troops in order and rebuilt their discipline.
Tips
history
饬 is not used by itself in modern Chinese; it lives on in 整饬 ('to put in order') and the bureaucratic verb 饬令 ('to order, by official directive'). The food radical 饣 is historical here; 力 and 人 carry the 'apply effort to set straight' idea.
register
Formal and bookish. Outside set words like 整饬 and old official orders, 饬 is not heard in everyday speech.
The right side is built around 力 ('strength'), here fused with a small person-top stroke (standalone 力 is 2 strokes, so the extra strokes are an absorbed top element). It gives 饬 its core idea: applying effort to straighten and correct things.